The Standard Electrical Dictionary / A Popular Dictionary of Words and Terms Used in the Practice of Electrical Engineering

by T. O'Conor Sloane

583-624 INDEX.
Page
A 7
Absolute 7
Absolute Calibration 97
Absolute Electric Potential 429
Absolute Electrometer 222
Absolute Galvanometer 266
Absolute Measurement 8
Absolute Potential 428
Absolute Temperature 8
Absolute Unit 554
Absolute Unit Resistance, Weber's 468
Absolute Vacuum 557
Absolute Zero 581
Abscissa 7
Abscissas, Axis of 54
Absorption, Electric 8
A. C. C. 8
Acceleration 8
Accumulator 8
Accumulator, Electrostatic 8
Accumulator, Water Dropping 9
Acetic Acid Battery 58
Acheson Effect 208
Acid, Carbonic 108
Acid, Chromic, Battery 61
Acid, Hydrochloric, Battery 66
Acid, Spent 491
Acid, Sulphuric 497
Acidometer 10
Acierage 494
Aclinic Line 10
Acoustic Telegraphy 10
Acoutemeter 10, 53
Action, Electrophoric 230
Action, Local 331
Action, Magne-crystallic 335
Action, Refreshing 454
Action, Secondary 477
Actinic Photometer 411
Actinic Rays. 11
Actinism 11
Actinometer, Electric 11
Active Electric Circuit, 123
Activity 11
Actual Horse Power 290
Adapter 11
A. D. C., 11
Adherence, Electro-magnetic 11
Adherence, Magnetic 338
Adjuster, Cord 152
Adjustment of Brushes 90
Admiralty Rules of Heating 12
AEolotropic 34
Aerial Cable 95
Aerial Conductor 12
Affinity 12
Affinity, Molecular 380
After Current,. 159
Agglomerate Leclanché Battery 66
Agir Motor 13
Agone 13
Agonic Line, 13
Air 13
Air Blast 13
Air Condenser 14
Air Field 252
Air Gaps 15
Air Line Wire 15
Air Pump, Heated 15
Air Pump, Mercurial 16
Air Pumps, Short Fall 16
Alarm, Burglar 16
Alarm, Electric 17
Alarm, Fire, Electric Automatic 257
Alarm, Fire and Heat 17
Alarm, Overflow 18
Alarm, Water Level 18
Alcohol, Electric Rectification of 18
Alignment, 18
Allotropy 18
Alloy 18
Alloy, Platinum 419
Alloy, Platinum-Silver 419
Alloys, Paillard 400
Alphabet, Telegraphic 19
Alternating 23
Alternating Current 159
Alternating Current Arc 23
Alternating Current Dynamo 193
Alternating Current Generator or Dynamo 24
Alternating Current Meter 373
Alternating Current System 23
Alternating Field 252
Alternative Current 563
Alternative Path 24
Alternatives, Voltaic 563
Alternator 24
Alternator, Constant Current 24
Alternator, Dead Point of an 177
Alternation 23
Alternation, Complete 23
Alternation, Cycle of 175
Alum Battery 58
Aluminum 24
Aluminum Battery 58
Amalgam 24
Amalgamation 25
Amber 25
American Twist Joint 309
Ammeter 26
Ammeter, Ayrton 26
Ammeter, Commutator 26
Ammeter, Cunynghame's 26
Ammeter, Eccentric Iron Disc 27
Ammeter, Electro-magnetic 27
Ammeter, Gravity 27
Ammeter, Magnetic Vane 27
Ammeter, Magnifying Spring 28
Ammeter, Permanent Magnet 28
Ammeter, Reducteur for 453
Ammeter, Solenoid 28
Ammeter, Spring 28
Ammeter, Steel Yard 28
Ammunition Hoist, Electric 29
Amperage 29
Ampere 29
Ampere- and Volt-meter Galvanometer 274
Ampere Arc 30
Ampere Balance 56
Ampere Currents 30
Ampere Feet 30
Ampere-hour 30
Amperes, Lost 30
Ampêre's Memoria Technica 30
Ampere Meters 26, 30
Ampere Meter, Balance 391
Ampere Meter, Neutral Wire 391
Ampere-minute 30
Ampere Ring 30
Ampere-second 30
Ampere's Theory of Magnetism 354
Ampere-turns 31
Ampere-turns, Primary 31
Ampere-turns, Secondary 31, 551
Ampere Windings 31
Ampérian Currents 165
Amplitude of Waves 31
Analogous Pole 31, 425
Analysis 31
Analysis, Electric 32
Analysis, Electrolytic 214
Analyzer, Electric 32
Anelectrics 32
Anelectrotonus 32
Angle of Declination 32, 177
Angle of the Polar Span 32
Angle of Inclination or Dip 33
Angle of Lag 33-318
Angle of Lead 33
Angle of Maximum Sensitiveness 479
Angle of Polar Span 423
Angle, Polar 423
Angle, Unit 554
Angular Currents 165
Angular Currents, Laws of 165
Angular Force 544
Angular Velocity 32, 559
Animal Electricity 33
Animal System, Electric Excitability of 247
Anion 33
Anisotropic 34
Annealing, Electric 34
Annular Electro-magnet 216
Annunciator 34
Annunciator Clock 35
Annunciator Clock, Electric 127
Annunciator Drop 35
Annunciator, Gravity Drop 35
Annunciator, Needle 35
Annunciator, Swinging or Pendulum 35
Anodal Diffusion 35
Anode 36
Anodic Closure Contraction 36
Anodic Duration Contraction 36
Anodic Opening Contraction 36
Anodic Reactions 36
Anomalous Magnet 335
Anti-induction Conductor 36, 145
Anti-magnetic Shield 37
Antilogous Pole, 425
Antimony 37
Anvil 37
A. O. C. 38
Aperiodic 38
Aperiodic Galvanometer 266
Apparent Coefficient of Magnetic Induction 346
Apparent Resistance 297, 462
Apparent Watts 573
Arago's Disc 88
Arc 39
Arc, Ampere 30
Arc, Compound. 39
Arc, Electric Blow-pipe 84
Arc, Metallic 39
Arc, Micrometer 39, 376
Arc, Multiple 387
Arc, Simple 39
Arc, Voltaic 39
Arc Box, Multiple 387
Arc Lamp 319
Arc Lamp, Differential 320
Arc Lamp, Double Carbon 191
Areometer 41
Areometer, Bead 41
Argyrometry 41
Arm 41
Armature 41
Armature, Bar 42
Armature, Bipolar 42
Armature Bore 42
Armature Chamber 42
Armature, Closed Coil 43
Armature Coil, or Coils 43
Armature Conductors, Lamination of 319
Armature Core 43
Armature, Cylinder 43
Armature, Cylindrical 45
Armature, Disc 43
Armature, Drum 45
Armature Factor 45
Armature, Flat Ring 45
Armature, Girder 49
Armature, H 49
Armature, Hinged 45
Armature, Hole 45
Armature, Intensity 45
Armature Interference 45
Armature, Load of 46
Armature, Multipolar 46
Armature, Neutral 46
Armature, Neutral Relay 46, 390
Armature, Non-polarized 46
Armature of Influence Machine 46
Armature of Leyden Jar or Static Condenser 46
Armature, Open Coil 46
Armature, Perforated 45
Armature, Pivoted 47
Armature Pockets 47
Armature, Polarized 47
Armature, Pole 47
Armature, Quantity 47
Armature, Radial 47
Armature Reactions 41
Armature, Revolving, Page's 47
Armature, Ring 48
Armature, Rolling 49
Armatures, Gyrostatic Action of 288
Armature, Shuttle 49
Armature, Siemens' Old 49
Armature, Spherical 49
Armature, Stranded Conductor 49
Armature, Unipolar 50, 553
Armature, Ventilation of 560
Armor of Cable 50
Arm, Rheostat 472
Arms, Proportionate 436
Arms, Ratio 437
Arms, Rocker 50-474
Arrester, Lightning 328
Arrester, Lightning, Counter-electro-motive Force 329
Arrester, Lightning, Plates 329
Arrester, Lightning, Vacuum. 329
Arrester Plate 417
Arrester, Spark 489
Arrival Curve 168
Articulate Speech 50
Artificial Carbon 106
Artificial Magnet 335
Ascending Lightning 330
Assymmetrical Resistance 462
Astatic 50
Astatic Circuit 12
Astatic Couple 157
Astatic Galvanometer 266
Astatic Needle 50
Astronomical Meridian, 372
Asymptote 51
Atmosphere 51
Atmosphere, Residual 51, 460
Atmospheric Electricity 51
Atom 52
Atomic Attraction 52
Atomic Current 160
Atomic Energy 238
Atomic Heat 52-285
Atomic Weight 53
Atomicity 52
Attracted Disc Electrometer 223
Attraction 53
Attraction, Atomic 52
Attraction, Magnetic 338
Attraction, Molar 380
Attraction, Molecular 380
Attraction and Repulsion, Electro-dynamic 211
Attraction and Repulsion, Electro-magnetic 217
Attraction and Repulsion, Electro-static 234
Attraction and Repulsion, Electro-static, Coulomb's Law of 155
Audiometer 53
Aura, Electrical 53
Aurora 53
Austral Pole 54
Autographic Telegraph 510
Automatic Circuit Breaker 121
Automatic Cut Out 175, 475
Automatic Drop 192
Automatic Electric Bell 78
Automatic Electric Fire Alarm 257
Automatic Switch 500
Automatic Telegraph 504
A. W. G., 54
Axial Couple 514
Axial Force 544
Axial Magnet 336
Axis, Electric 54
Axis, Magnetic 338
Axis of Abscissas 54
Axis of Ordinates 54, 397
Axis of X 54
Axis of Y 54, 397
Ayrton's Ammeter 26
Azimuth 54
Azimuth Circle 54
Azimuth Compass 141
Azimuth, Magnetic 338
B 55
B. A. 55
Back Electro-motive Force of Polarization 156
Back Induction 55
Back Shock or Stroke of Lightning 55
Back Stroke 55
Bagration Battery 59
Balance 55
Balance, Ampere 56
Balance Ampere Meter 391
Balance, Electric 577
Balance, Inductance 293
Balance, Plating 417
Balance, Slide 374
Balance, Thermic 85
Balance, Torsion, Coulomb's 544
Balance, Wheatstone's 577
Balata 56
Ballistic Galvanometer 567
Balloon Battery 59
B. and S. W. G. 56
Banked Battery 59
Bank of Lamps 323
B. A. Ohm 394
Barad 56
Bar, Armature 42
Bar, Bus 94
Bar Electro-magnet 217
Bar Magnet 336
Barometer 56
Bar, Omnibus 94
Bar Photometer 411
Bars, Commutator 56, 140
Bath 57
Bath, Bipolar Electric 57
Bath, Copper 152
Bath, Copper Stripping 152
Bath, Electric Head 284
Bath, Electric Shower 57
Bath, Gold 279
Bath, Gold Stripping 279
Bath, Multipolar Electric 57
Bath, Nickel 391
Bath, Plating 418
Baths, Electro-medical 222
Bath, Silver 484
Bath, Silver Stripping 484
Bath, Stripping 57
Bath, Unipolar Electric 57
Batten 57-58
Battery, Acetic Acid 58
Battery, Alum 58
Battery, Aluminum 58
Battery, Bagration 59
Battery, Balloon 59
Battery, Banked 59
Battery, Bichromate 59
Battery, Bunsen 59
Battery, Cadmium 60
Battery, Callan 60
Battery, Camacho's 60
Battery, Carré's 60
Battery, Cautery 61
Battery Cell, Element of a 237
Battery, Chloric Acid 61
Battery, Chloride of Lime 61
Battery, Chromic Acid 61
Battery, Closed Circuit 61
Battery, Column 61
Battery, d'Arsonval's 62
Battery, de la Rue .62
Battery, de la Rive's Floating 179
Battery, Dry 63
Battery, Elements of 63
Battery, Faradic 63
Battery, Ferric Chloride 63
Battery, Fuller's 63
Battery, Gas 63
Battery, Gas, Grove's 281
Battery Gauge 64
Battery, Gravity 64
Battery, Grenet 65
Battery, Grove's 65
Battery, Hydrochloric Acid 66
Battery, Lalande & Chaperon 69
Battery, Lalande-Edison 69
Battery, Lead Chloride 66
Battery, Lead Sulphate 66
Battery, Leclanché 66
Battery, Leclanché Agglomerate 66
Battery, Local 66, 831
Battery, Magnetic 338
Battery, Main 66
Battery, Marié Davy's 67
Battery, Maynooth's 67
Battery, Medical 67
Battery, Meidinger's 68
Battery, Mercury Bichromate 63
Battery Mud 68
Battery, Multiple Connected 68
Battery, Niaudet's 61
Battery, Nitric Acid 68
Battery of Dynamos 6S
Battery of Leyden Jars, 68
Battery, Open Circuit 68
Battery or Pile, Thermo-electric 530
Battery, Oxide of Copper 68
Battery, Peroxide of Lead 69
Battery, Platinized Carbon 69
Battery, Plunge 69
Battery, Pneumatic 69
Battery, Primary 69, 434
Battery, Pulvermacher's Electro-medical 69
Battery, Sal Ammoniac 69
Battery, Salt, or Sea Salt 69
Battery, Sand 70
Battery, Secondary 70
Battery, Secondary, Planté's 72
Battery, Secondary, Real Efficiency of 205
Battery, Sir William Thomson's 72
Battery, Siemens and Halske's 72
Battery, Skrivanow 72
Battery, Smee's 73
Battery Solutions, Chromic Acid 73
119, 178, 192, 232, 318, 421, 542, 549
Battery, Spiral 73
Battery, Split 73
Battery, Sulphate of Mercury 67
Battery System, Universal 556
Battery, Thermo-chemical 530
Battery, Trough 73
Battery, Trouvé's Blotting Paper 73
Battery, Tyer's 74
Battery, Upward's 75
Battery, Varley's 76
Battery, Volta's 76
Battery, Voltaic or Galvanic 76
Battery Voltmeter 569
Battery, Water 77
Battery, Wollaston 78
B. A. Unit, 554
B. A. Unit of Resistance 78, 462
B. A. Volt 568
B. E. 78
Bead Areometer 41
Becquerel's Laws of Thermo-electricity 78
Beaumé Hydrometer 78
Bed-piece 78
Bell, Automatic Electric 78
Bell, Call 78, 98
Bell Call 79
Bell Call, Extension 248
Bell, Circular 79
Bell, Differentially Wound 79
Bell, Electric 79
Bell, Electro-mechanical 80
Bell, Indicating 80, 297
Bell, Magneto 80
Bell, Magneto Call 361
Bell, Night 392
Bell-shaped Magnet, 336
Bells, Relay 80, 457
Bell, Trembling 78
Bell, Vibrating. 78
Belts, Joints in 311
Bennett's Electroscope 233
Bias 80
Bias of Tongue of Polarized Relay 542
Bichromate Battery 59
Bichromate Mercury Battery 63
Bifilar Suspension 498
Bifilar Winding 81
Binary Compound 81
Binding 81
Binding Posts or Screws 81
Binnacle 81
Biology, Electro- 208
Bioscopy, Electric 82
Bipolar Armature 42
Bipolar Electric Bath 57
Bisected Coils 132
Bismuth 82
Bi-telephone 82, 524
Black, Platinum 419
Blasting, Electric 83
Bleaching, Electric 83
Block, Branch 87
Block, Cross-over 158
Block System 83
Block Wire 83
Blotting Paper Battery, Trouvé's 73
Blow-pipe 83
Blow-pipe, Electric Arc 84
Blue Magnetism 355
Bluestone 84
Blue Vitriol 562
Board, Cross-connecting 157
Board, Fuse 263
Board, Hanger 284
Board, Key 313
Board, Multiple Switch 387
Board of Trade Ohm 394
Board of Trade Unit 555
Board, Switch 500
Boat, Electric 84
Bobbins 84
Body Protector 84
Bohenberger's Electroscope 233
Boiler Feed, Electric 84
Boiling 84
Boll 85
Bolometer 85
Bombardment, Molecular 380
Bore, Armature 42
Boreal Pole 85
Bot 85
Bound Charge 115
Box Bridge 85
Box, Cable 95
Box, Cooling 151
Box, Distributing 190
Boxes, Flush 258
Box, Fishing 311
Box, Fuse 263
Boxing the Compass 86
Box, Junction 311
Box, Multiple Arc 387
Box, Resistance 462
Box, Resistance, Sliding 463
Box Sounding Relay 457
Box, Splice 492
Bracket, Saddle 475
Bracket, Wall 572
Braid, Tubular 550
Brake, Electro-magnetic 86
Brake, Magneto-electric 362
Brake, Prony 435
Branch 87
Branch Block 87
Branch Circuit 121
Branch Conductor 87
Branding, Electric 87
Brassing 87
Brazing, Electric 87
Break 88
Break, Circuit Loop 125
Break-down Switch 88
Breaker, Automatic Circuit 121
Breaker, Circuit 121
Breaker, Circuit, File 121
Breaker, Contact 121, 146
Break Induced Current 162
Breaking Weight 89
Break, Loop 332
Break Shock 482
Breath Figures, Electric 89
Breeze, Electric 89
Breeze, Static 493
Breguet Unit of Resistance 463
Bridge 89
Bridge, Box 89
Bridge, Inductance 293
Bridge, Induction 293
Bridge Key 313
Bridge, Magnetic 338
Bridge, Meter 373
Bridge, Resistance 577
Bridge, Reversible 472
Bridge, Slide 374
Bridge, Wheatstone . 575
Bridge, Wheatstone, Commercial 36
British Association Bridge 89
Britannia Joint 309
Broadside Method 89
Broken Circuit 125
Bronzing 89
Brush 90
Brush, Carbon 90
Brush, Collecting 90
Brush, Discharge 187
Brushes, Adjustment of 90
Brushes, Lead of 90
Brushes, Negative Lead of 324
Brushes, Scratch 476
Brush, Faradic 251
Brush Holders 91
Brush, Pilot 91
Brush, Rotating 91
Brush, Third 91
Brush Trimmer 549
Brush, Wire Gauge 92
Buckling 92
Bug 92
Bug Trap 92
Bunched Cable 95
Bunsen Battery 59
Bunsen Disc 92
Bunsen's Photometer 412
Buoy, Electric 93
Burglar Alarm 16
Burner, Electric Gas 93
Burning 94
Bus Bar 94
Bus Rod 94
Bus Wire 94
Butt Joint 310
Button, Call 98
Button, Press 94
Button, Push 93, 98
Buzzer 94
B. W. G. 94
C 95
C. C. 109
Cable 95
Cable, Aerial 95
Cable, Armature of 50
Cable, Armor of 50
Cable Box 95
Cable, Bunched 95
Cable, Capacity of 95
Cable Clip 97
Cable Core 96
Cable, Duplex 96
Cable, Flat 96
Cablegram 96
Cable Grip 96
Cable Hanger 96
Cable Hanger Tongs 97
Cable, Suspension Wire of 97
Cable Tank 97
Cadmium Battery 60
Calamine 97
Cal Electricity 208
Calibration 97
Calibration, Absolute 97
Calibration, Invariable 97
Calibration, Relative 98
Call Bell 78, 79, 98
Call Bell, Extension 248
Call Bell, Magneto 361
Call Button 98
Call, Thermo 530
Call, Thermo-electric 531
Callan Battery 60
Calling Drop 98
Calorie or Calory 98
Calorimeter 98
Calorimetric Photometer 412
Calory or Calorie 98
Cam, Listening 330
Camacho's Battery 60
Candle 99
Candle, Concentric 99
Candle, Debrun 99
Candle, Decimal 99
Candle, Electric 99
Candle-foot 259
Candle, German Standard 99
Candle Holder 99
Candle, Jablochkoff 100
Candle, Jamin 100
Candle, Meter 374
Candle Power 100
Candle Power, Nominal 101
Candle Power, Rated 101
Candle Power, Spherical 101
Candle, Standard 101
Candle, Wilde 101
Caoutchouc 101
Cap, Insulator 306
Capacity, Carrying 108
Capacity, Dielectric 102
Capacity, Electric or Electrostatic 102
Capacity, Instantaneous 102
Capacity, Magnetic Inductive 346, 349
Capillarity, Electro- 209
Capillary Electrometer 224
Capacity of a Telegraph Conductor 103
Capacity of Cable 95
Capacity of Polarization of a Voltaic Cell 103
Capacity, Polarization 424
Capacity, Residual 103
Capacity, Specific Inductive 103
Capacity, Storage 105, 495
Capacity, Unit of 105
Capillarity 105
Capillary Telephone 525
Carbon 106
Carbon, Artificial 106
Carbon Brush 90
Carbon, Concentric 107
Carbon, Cored 107
Carbon Dioxide 107
Carbon Holders 107
Carbonic Acid, 108
Carbonic Acid Gas 108
Carbonization 107
Carbonized Cloth 107
Carbon, Platinized, Battery 69
Carbon Resistance 463
Carbon, Retort 471
Carbons, Lamp, Flashing of Incandescent 257
Carbon, Telephone 525
Carbon Transmitter 549
Carbon, Volatilization of 108
Carburetted Hydrogen, Heavy 397
Carcel 108
Carcel Gas Jet 108
Carcel Lamp 108
Card, Compass 142
Cardew Voltmeter 569
Carré's Battery 60
Carrying Capacity 108
Cascade 108
Cascade, Charging and Discharging Leyden Jars in 108
Cascade, Gassiot's 275
Case-hardening, Electric 109
Cataphoresis 109
Catch, Safety 175
Cathode, etc. See Kathode 312
Caustry, Galvano 109
Cautery Battery 61
Cautery, Electric 109
Cautery, Galvano 109
Cautery, Galvano-electric 109
Cautery, Galvano-thermal 109
Cell, Battery, Element of a 237
Cell, Constant 109
Cell, Electrolytic 109
Cell, Porous 427
Cell, Selenium 478
Cell, Standard Voltaic 109
Cell, Standard Voltaic, Daniells' 109
Cell, Standard Voltaic, Latimer Clark's 110
Central Station 493
Central Station Distribution or Supply 112
Centre of Gravity 112
Centre of Gyration 112
Centre of Oscillation 112
Centre of Percussion 112
Centrifugal Force 112
Centrifugal Governor 113
C. G. S. 113
Chain, Molecular 380
Chamber, Armature 42
Chamber of Incandescent Lamp 113
Change, Chemical 116
Changer, Pole 425
Changing Over Switch 500
Changing Switch 500
Chaperon, Lalande &, Battery 69
Characteristic 169
Characteristic Curve 113, 168
Characteristic Curve, External 171
Characteristic Curve of Converter 169
Characteristic, Drooping 114
Characteristic, External 114
Characteristic, Internal 114
Characteristics of Sound 114
Charge 114
Charge and Discharge Key 313
Charge, Bound 115
Charge Current 160
Charge, Density of 115, 180
Charge, Dissipation of 115
Charge, Distribution of 115
Charge, Free 115
Charge, Negative 389
Charge, Residual 116
Charging Curve 170
Chatterton's Compound 116
Chemical Change 116
Chemical Electric Meter 375
Chemical, Electro-, Equivalents 244
Chemical Element 236
Chemical Energy 239
Chemical Equivalent 244
Chemical, Cautery Galvano 265
Chemical Recorder 117
Chemical Telephone 526
Chemical Equivalent, Thermo- 245
Chemistry 118
Chemistry, Electro- 209
Cheval, Force de 260
Chicle 56
Chimes, Electric 118
Chloric Acid Battery 61
Chloride, Ferric, Battery 63
Chloride, Lead, Battery 66
Chloride of Lime Battery 61
Chlorimeter 73
Choking Coil 132
Chronograph, Electric 118
Chromic Acid Battery 61
Chromic Acid Battery Solutions 73
Chromoscope 119
Chutaux's Solution 119
Cipher Code 130
Circle, Azimuth 54
Circle, Delezenne's 133
Circle, Galvanic or Voltaic 119
Circle, Magic 119
Circuit 120
Circuit, Astatic 120
Circuit, Branch 121
Circuit Breaker 121
Circuit Breaker, Automatic 121
Circuit Breaker, File 121
Circuit Breaker, Mercury 121
Circuit Breaker, Pendulum 121
Circuit Breaker, Tuning-fork 121
Circuit, Broken 125
Circuit Changing Switch 500
Circuit, Closed, Battery 61
Circuit, Derivative 123
Circuit, Derived 123
Circuit, Electrostatic 123
Circuit, Electric, Active 123
Circuit, External 123
Circuit, Grounded 123
Circuit, Incomplete 125
Circuit Indicator 298
Circuit Induction, Open 303
Circuit, Leg of 325
Circuit, Local 331
Circuit, Loop 125
Circuit, Loop Break 125
Circuit, Magnetic 340
Circuit, Magnetic Double 340
Circuit, Main 125
Circuit, Main Battery 125
Circuit, Metallic 125
Circuit, Negative Side of 125
Circuit, Open 125
Circuit, Positive Side of 125
Circuit, Recoil 125
Circuit, Return 125
Circuits, Forked 126
Circuit, Short 482
Circuit, Shunt 123, 126
Circuit, Simple 126
Circuits, Parallel 123, 126
Circuit, Voltaic 126
Circuit Working, Short 482
Circular Bell, 79
Circular Current, 160
Circular, Mil 379
Circular Units 126, 555
Circumflux 126
Clamp 126
Clark's Compound 126
Cleansing, Fire 257
Clearance Space, 489
Cleat, Crossing 127
Cleats 127
Cleavage, Electrification by 127
Clip, Cable 97
Clock, Annunciator 35
Clock, Controlled 127
Clock, Controlling 127
Clock, Electric Annunciator 127
Clock, Electrolytic 128
Clock, Master 127
Clock, Secondary 127
Clock, Self-winding, Electric 128
Clockwork Feed 128
Cloisons 128
Closed Circuit Battery 61
Closed Coil Armature 43
Closure 128
Closure Contraction, Kathodic 312
Cloth, Carbonized 107
Club-foot Electro-magnet 217
Clutch 128
Clutch, Electro-magnetic 128
Coatings of a Condenser, or Prime Conductor 129
Cockburn Fuse 263
Code, Cipher 130
Code, S. N. 486
Code, Telegraphic 130, 511
Coefficient 130
Coefficient, Apparent, of Magnetic Induction 346
Coefficient, Economic 130, 204, 205
Coefficient of Electrical Energy 205
Coefficient of Expansion 247
Coefficient of Induced Magnetization 359, 354
Coefficient of Magnetic Induction 346, 349
Coefficient of Mutual Induction 301
Coefficient of Self-induction 298
Coercitive Force 471
Coercive Force 471
Coercive or Coercitive Force 131
Coil and Plunger 131
Coil and Coil Plunger 131
Coil and Plunger, Differential 132
Coil, Armature 43
Coil, Choking 132
Coil, Earth 133
Coil, Electric 133
Coil, Exploring 350
Coil, Flat 133
Coil, Induction 133
Coil, Induction, Inverted 136
Coil, Induction, Telephone 137
Coil. Kicking 132
Coil, Magnet 336
Coil, Magnetizing 137
Coil, Reaction 132
Coil, Resistance 137
Coil, Resistance, Standard 464
Coil, Rhumkorff 138
Coil, Ribbon 138
Coils, Bisected 132
Coils, Compensating 138
Coils, Sectioned 138
Coils, Henry's 138
Coils, Idle 295
Coil, Single, Dynamo 202
Coil, Spark 489
Coil, Sucking 132
Collecting Brush 90
Collecting Ring 139
Collector 139
Colombin, 139
Colophony 460
Colors of Secondary Plates 478
Column Battery 61
Column, Electric 139
Comb 140
Combined Resistance 464
Comb Protector 437
Commercial Efficiency 204
Commercial Efficiency of Dynamo 195
Commercial Wheatstone Bridge 86
Common Reservoir 460
Communicator 140
Commutation, Diameter of 182
Commutator 140
Commutator Ammeter 26
Commutator Bars 140, 56
Commutator, Flats in 140
Commutator, High Bars of 289
Commutator, Neutral Line of 390
Commutator, Neutral Point of 390
Commutator of Current Generators and Motors 140
Commutators, Bars of 56
Commutator Segments 56
Commutator, Split Ring 141
Commuted Current 160
Commuter 140
Commuting Transformer 547
Compass 141
Compass, Azimuth 141
Compass, Boxing the 86
Compass Card, 142
Compass, Declination 142
Compass, Inclination 142
Compass, Mariners' 142
Compass, Points of the 143
Compass, Spirit 143
Compass, Surveyors 143
Compass, Variation of the 32, 558
Compensating Coils 138
Compensating Magnet 336
Compensating Poles 426
Compensating Resistance 144
Complementary Distribution 144
Complete Alternation 23
Component 144
Components of Earth's Magnetism 356
Composition of Forces 260
Compound Arc 39
Compound, Binary 81
Compound, Chatterton's 116
Compound, Clark's 126
Compound Dynamo 195
Compounding, Over- 399
Compound Magnet 336
Compound or Compound Wound Motor 382
Compound Winding 578
Concentration of Ores, Magnetic 340
Concentrator, Magnetic 340
Concentric Candle 99
Concentric Carbon 107
Condenser 144
Condenser, Coatings of a, or Prime Conductor 129
Condenser, Epinus' 242
Condenser, Plate 417
Condenser, Sliding 144
Condenser, Varley's 559
Condensing Electroscope 233
Conductance 144
Conductance, Magnetic 340
Conduction 144
Conduction, Electrolytic 215
Conductive Discharge 187
Conductivity 144
Conductivity, Magnetic 340
Conductivity, Specific 145
Conductivity, Unit of 145
Conductivity, Variable 145
Conductor 145
Conductor, Anti-induction 145
Conductor, Branch 87
Conductor, Capacity of a Telegraph 103
Conductor, Conical 145
Conductor, Imbricated 146
Conductor, Interpolar 307
Conductor, Leakage 325
Conductor, Prime 146, 434
Conductors, Equivalent 146
Conductors, Lamination of Armature 319
Conductors, Service 481
Conductor, Underground 552
Congress Ohm 395
Congress Volt 568
Conical Conductor 145
Conjugate 146
Connect 146
Connection, Cross 158
Connection, Relay 457
Connector 146
Consequent Points 422
Consequent Poles 146, 478
Conservation of Electricity 146
Conservation of Energy 239
Constant Current 160
Constant Current Alternator 24
Constant Current Regulation 454
Constant, Dielectric 183
Constant, Galvanometer 268
Constant Potential 429
Constant Potential Regulation 455
Constant, Time 54l
Contact Breaker 121, 146
Contact, Electric 147
Contact Electricity 147
Contact Faults 147
Contact Key, Double 314
Contact Key, Sliding 316
Contact Lamp 320
Contact, Line of 330
Contact Point 147
Contact Potential Difference 147
Contact Ring 473
Contact Spring 148
Contact Series 147
Contact Theory 148
Continuity, Magnetic 340
Continuous Alternating Transformer 547
Continuous Current 161
Continuous Current Transformer 384, 547
Contraction, Anodic Closure 36
Contraction, Anodic Duration 36
Contraction, Anodic Opening 36
Contraction, Kathodic Closure 312
Contraction, Kathodic Duration 312
Contractures 148
Contraplex Working 580
Control, Electro-magnetic 218
Control, Gravity 281
Controlled Clock, 127
Controlling Clock 127
Controlling Field 148
Controlling Force 148
Controlling Magnet 185, 336
Control, Magnetic 341
Control, Spring 492
Convection, Electric 149
Convection, Electrolytic 149, 214
Convection of Heat, Electric 149
Convective Discharge 187
Conversion, Efficiency of 205
Converter 149
Cooling Box 151
Co-ordinates, Origin of 391
Co-ordinates, System of 150
Copper 151
Copper Bath 152
Copper Stripping Bath 152
Copper Voltameter 563
Cord Adjuster 152
Cord, Flexible 152
Cord, Pendant 405
Core 152
Core, Armature 43
Core, Cable 96
Cored Carbon 107
Core-discs 152
Core-discs, Perforated 154
Core-discs, Pierced 152
Core-discs, Toothed 154
Core, Laminated 154
Core, Magnet 336
Core Ratio 154
Core, Ribbon 154
Core, Ring 155
Cores, Krizik's 318
Core, Stranded 155
Core, Tangentially Laminated 155
Core Transformer 155
Core, Tubular 155
Corpusants 155
Corresponding Points 422
Coulomb 155
Coulomb's Law of Electrostatic Attraction and Repulsion 155
Coulomb's Law of Magnetic Attraction and Repulsion 338
Coulomb's Torsion Balance 544
Coulomb, Volt- 568
Counter, Electric 156
Counter Electro-motive Force 156, 228
Counter-electro-motive Force Lightning Arrester 329
Counter Inductive Effect 204
Couple 156
Couple, Astatic 157
Couple, Axial 544
Couple, Magnetic 341
Couple, Moment of 544
Couple, Thermo-electric 532
Couple, Voltaic or Galvanic 156
Coupling 259
Coupling of Dynamo 201
C. P. 157
Crater 157
Creep, Diffusion 184
Creeping 157
Creeping, Magnetic 341
Creeping of Magnetism 356
Crith 157
Critical Current 161
Critical Distance of Alternative Path 190
Critical Resistance 464
Critical Speed 157
Critical Value, Villari's 561
Crookes' Dark Space 489
Cross 157
Cross-connecting Board 157
Cross Connection 158
Cross Induction 298
Crossing Cleat 127
Crossing Wires 158
Cross-magnetizing Effect 158, 298
Cross-over Block 158
Cross, Peltier's 405
Cross Talk 158
Crucible, Electric 158
Crystallization, Electric 158
Cube, Faraday's 249
Culture. Electro- 209
Cunynghame's Ammeter 26
Cup, Mercury 371
Cup, Porous 159, 426
Current 159
Current, After 159
Current, Alternating 159
Current, Alternating System 23
Current, Alternative 563
Current Arc, Alternating 23
Current, Atomic 160
Current, Break Induced 162
Current, Charge 160
Current, Circular 160
Current, Commuted 160
Current, Constant 160
Current, Continuous 161
Current, Continuous, Transformer 384
Current, Critical 161
Current, Daniel 161
Current, U. S. or Siemens' Unit 161
Current, Demarcation 161
Current Density 161
Current, Derived 164
Current, Diacritical 161
Current, Diaphragm 161
Current, Direct 162
Current, Direct Induced 162
Current, Direction of 162
Current, Displacement 162
Current, Extra 162
Current, Faradic 162
Current, Field of Force of a 255
Current, Foucault 163
Current, Franklinic 163
Current Generator 277
Current, Induced 163
Current Induction 163
Current Induction, Unipolar 553
Current Intensity 163
Current, Inverse Induced 163
Current, Jacobi's Unit of 163
Current, Joint 163
Current, Linear 164
Current, Make and Break 164, 367
Current, Make Induced 163
Current Meter 164, 375
Current Meter, Alternating 373
Current, Negative 164
Current, Nerve and Muscle 164
Current, Opposed 164
Current, Partial 164
Current, Polarizing 164
Current, Positive 164
Current, Power of Periodic 433
Current, Pulsatory 164
Current, Rectified 164
Current, Rectilinear 165
Current, Redressed 165
Current Regulation, Constant 454
Current, Reverse Induced 163
Current Reverser 165
Currents, Ampere 30
Currents, Ampérian 165
Currents, Angular. 165
Currents, Angular, Laws of 165
Currents, Earth 166
Current, Secondary 166
Current, Secretion 166
Currents, Eddy 163
Currents, Eddy Displacement 162
Currents in Parallel Circuits, Independence of 297
Current, Sinuous 166
Current, Sheet 166
Current, Shuttle 483
Currents, Local 163
Currents, Local 331
Currents, Multiphase 166
Currents, Natural 166, 389
Currents, Nerve 390
Currents of Motion 167
Currents of Rest 167
Currents, Orders of 167
Currents, Parasitical 163
Currents, Polyphase 167
Currents, Rotatory 167
Currents, Thermo-electric 167
Current Streamlets 495
Current, Swelling 167
Current, Tailing 501
Current, Undulatory 167
Current, Unit 167
Current, Wattless 168
Curve, Arrival 168
Curve, Characteristic 113, 168
Curve, Characteristic, of Converter 169
Curve, Charging 170
Curve, Discharging 170
Curve, Elastic 206
Curve, Electro-motive Force 170
Curve, External Characteristic . 171
Curve, Harmonic 174, 485
Curve, Horse Power 171
Curve, Isochasmen 171
Curve, Life 171
Curve, Load 172
Curve, Magnetization 172
Curve of Distribution of Potential in Armature 172
Curve of Dynamo 173
Curve of Saturation of Magnetic Circuit 174
Curve of Sines 173, 485
Curve of Torque 174
Curve, Permeability Temperature 174
Curve, Sine 174, 485
Curve, Sinusoidal 174, 485
Curves, Magnetic 341
Cut In 174
Cut Out 174
Cut Out, Automatic 175, 475
Cut Out, Magnetic 175
Cut Out, Plug 175
Cut Out, Safety 175
Cut Out, Spring Jack 493
Cut Outs, Time 541
Cut Out, Wedge 175
Cutting of Lines of Force 175
Cycle of Alternation 175
Cycle of Magnetization 360
Cylinder, Armature 43
Cylinder, Electric Machine 333
Cylindrical Armature 45
Cystoscopy 175
Damper 176
Damping 176
Damping Magnet 336
Daniell's Standard Voltaic Cell 109
Dark Space, Faraday's 249
D'Arsonval's Battery 62
Dash-pot 176
Dead Beat 38, 176
Dead Beat Discharge 187
Dead Earth 176, 203
Dead Point of an Alternator 177
Dead Turns 177
Dead Turns of a Dynamo 551
Dead Wire 177
Death, Electrical 177
Debrun Candle 99
Decalescence 177
Decay of Magnetism 356
Deci 177
Decimal Candle 99
Declination, Angle of 32-177
Declination Compass 142
Declination, Magnetic 342
Declination Map 309
Declination of the Magnetic Needle 178
Decomposition 178
Decomposition, Electrolytic 178
Decrement 178
De-energize 178
Deflagration 178
Deflagrator, Hare's 73
Deflecting Field 178
Deflection 178
Deflection Method 178
Deflection of Magnet 337
Degeneration, Reaction of 179
Degradation of Energy 239
Deka 179
De la Rive's Floating Battery 179
De la Rue Battery 62
Delaurier's Solution 179
Delezenne's Circle 133
Demarcation Current 161
Demagnetization 179
Density, Current 161
Density, Electrical 115
Density, Electric Superficial 180
Density, Field 252
Density, Magnetic 342
Density of Charge 115, 180
Dental Mallet, Electric 180
Deposit, Electrolytic 180
Deposit, Nodular 392
Depolarization 180
Depolarizing Fluid 258
Derivation, Points of 180, 423
Derivative Circuit 123
Derived Circuit 123
Derived Current 164
Derived Units 555
Desk Push 180
Detector 180
Detector, Lineman's 180
Deviation of Discharge 188
Deviation, Quadrantal 180
Deviation, Semi-circular 181
Device, Safety 475
Dextrotorsal 181
Diacritical 181
Diacritical Current 161
Diagometer 181
Diagnosis, Electro- 181, 210
Diagram, Thermo-electric 532
Dial Telegraph 505
Diamagnetic 181
Diamagnetic Polarity 181, 423
Diamagnetism 182
Diameter of Commutation 182
Diapason, Electric 182
Diaphragm 182
Diaphragm Current 161
Dielectric, 182
Dielectric Capacity 102
Dielectric Constant 183
Dielectric, Energy of 183
Dielectric Polarization 183
Dielectric Resistance 183, 464
Dielectric Strain 183
Dielectric Strength 183
Dielectric Stress 496
Differential Arc Lamp 320
Differential Coil and Plunger 132
Differential Galvanometer 268
Differentially Wound Bell, 79
Differential Magnetometer 365
Differential Motor 382
Differential Relay 457
Differential Thermo-electric Pile 533
Differential Winding Working 183
Diffusion 184
Diffusion, Anodal . 35
Diffusion Creep 184
Digney Unit of Resistance 464
Dimensions and Theory of Dimensions 184
Dimmer 185
Diode Working 580
Dioxide, Carbon 107
Dioxide, Sulphur 497
Dip, Magnetic 342, 346
Dip of Magnetic Needle 185
Dipping 185
Dipping Needle 185
Direct Current 162
Direct Current Dynamo 197
Direct Induced Current, . 162
Direct Reading Galvanometer 269
Directing Magnet 185
Direction 185
Direction of Current 162
Direction, Positive 428
Directive Power 187
Disc, Arago's 38
Disc, Armature 43
Disc, Bunsen 92
Disc, Dynamo 197
Disc, Faraday's 249
Discharge and Charge Key 313
Discharge, Brush 187
Discharge, Conductive 187
Discharge, Convective 187
Discharge, Dead Beat 187
Discharge, Disruptive 187
Discharge, Duration of 188
Discharge, Glow 187
Discharge, Impulsive 188
Discharge Key, Kempe's 315
Discharge, Lateral 188
Discharge of Magnetism 356
Discharge, Oscillatory 188
Discharger 188
Discharger, Henley's Universal 189
Discharger, Universal 189
Discharger, Universal, Henley's 189
Discharge, Silent 187, 189, 206
Discharge, Spark 189
Discharge, Surging 188
Discharging Curve 170
Discharging Rod 189
Discharging Tongs 189
Disconnection 189
Discontinuity, Magnetic 342
Discovery, Oerstedt's 394
Disc Winding 579
Dispersion Photometer 412
Displacement Current 162
Displacement, Electric 188
Displacement, Oscillatory 398
Disruptive Discharge 187
Disruptive Tension 189
Dissimulated Electricity 189
Dissipation of Charge 115
Dissociation 189, 535
Distance, Critical, of Alternative Path 190
Distance, Explosive 190
Distance, Sparking 190
Distance, Striking 496
Distant Station 493
Distillation 190
Distortion of Field 252
Distributing Box 190
Distributing Switches 190
Distribution, Complementary 144
Distribution, Isolated 309
Distribution of Charge 115
Distribution of Electric Energy, Systems of 190
Distribution of Magnetism, Lamellar, 357
Distribution of Magnetism, Solenoidal 358
Distribution of Supply, Central Station 112
Door Opener, Electric 190
Dosage, Galvanic 190
Double Break Switch 500
Double Carbon Arc Lamp 191
Double Contact Key 314
Double Curb Working 581
Double Fluid Theory 191
Double Fluid Voltaic Cell 191
Double Magnetic Circuit 340
Double Needle Telegraph 506
Double Plug 191
Double Pole Switch 500
Double Tapper Key 314
Double Touch, Magnetization by 358
Double Trolley 549
Double Wedge 191
Doubler 191
D. P. 191
Drag 191
Drag of Field 254
Dreh-Strom 191

Drill, Electric 191
Drip Loop 192
Driving Horns 192
Dronier's Salt 192
Drooping Characteristic 114
Drop, Annunciator 35
Drop, Automatic 192
Drop, Calling 98
Drum Armature 45
Drum, Electric 193
Dry Battery 63
Dry Pile, Zamboni's 581
Dub's Laws 193
Duct 193
Duplex Bridge Telegraph 506
Duplex Cable 96
Duplex Differential Telegraph 507
Duplex Telegraph, 506
Duration Contraction, Kathodic 312
Duration of Electric Spark 490
Dyad 193
Dyeing, Electric 193
Dynamic Electricity 193
Dynamic, Electro- 211
Dynamic Induction, Magnetic 347
Dynamo, Alternating Current 193
Dynamo, Alternating Current Regulation of 195
Dynamos, Battery of 68
Dynamo, Commercial Efficiency of 195
Dynamo, Compound 195
Dynamo, Coupling of 201
Dynamo, Curve of 173
Dynamo, Dead Turns of a 551
Dynamo, Direct Current 197
Dynamo, Disc 197
Dynamo-electric Machine 197
Dynamo, Electroplating 198
Dynamo, Equalizing 198
Dynamo, Field and Armature Reaction of 450
Dynamo, Far Leading 198
Dynamo or Magneto-electric Generator, Flashing in a 257
Dynamo, Inductor 199
Dynamo, Interior Pole 199
Dynamo, Iron Clad 200
Dynamo, Ironwork Fault of a 308
Dynamo, Motor 200
Dynamo, Multipolar 200
Dynamo, Non-polar 200
Dynamo, Open Coil 200
Dynamo, Overtype 399
Dynamos, Regulation of 455
Dynamo, Ring 200
Dynamo, Self Exciting 201
Dynamo, Separate Circuit 201
Dynamo, Separately Excited 201, 479
Dynamo, Series 201
Dynamo, Shunt 202
Dynamo, Single Coil 202
Dynamo, Tuning Fork 202
Dynamo, Unipolar 202, 553
Dynamograph 199
Dynamometer 200
Dyne 203
Earth 203
Earth Coil 133
Earth Currents 166
Earth, Dead 176, 203
Earth, Magnetization by 359
Earth, Partial 203, 404
Earth Plate 203
Earth Return 203
Earth's Magnetism, Components of 356
Earth, Solid 203
Earth, Swinging 203
Earth, Total 203
Ebonite 203
Eccentric Iron Disc Ammeter 27
Economic Coefficient 130, 204, 205
Eddy Currents 163
Eddy Displacement Currents 162
Ediswan 204
Edison Effect 204
Edison-Lalande Battery 69
Eel, Electric 204
Effect, Acheson 208
Effect, Counter-inductive 204
Effect, Cross-magnetizing 158, 298
Effect, Edison 204
Effect, Faraday 249
Effect, Ferranti 251
Effect, Hall 284
Effect, Joule 311
Effect, Kerr 235, 312
Effect, Mordey 381
Effect, Page 401
Effect, Peltier 404
Effect, Photo-voltaic 415
Effect, Seebeck 478
Effect, Skin 486
Effect, Thomson 538
Effect, Voltaic 563
Efficiency 204
Efficiency, Commercial 204
Efficiency, Electrical 205
Efficiency, Gross 205
Efficiency, Intrinsic 205
Efficiency, Net 205
Efficiency of Conversion 205
Efficiency of Secondary Battery Quantity 205
Efficiency of Secondary Battery, Real 205
Efflorescence 206
Effluvium, Electric 206
Egg, Philosopher's 409
Elastic Curve 206
Elasticity, Electric 206
Electrepeter 206
Electric, Absolute, Potential 429
Electric Absorption 8
Electric Actinometer 11
Electric Alarm 17
Electrical Classification of Elements 237
Electrically Controlled Valve 558
Electric Ammunition Hoist 29
Electric Analysis 32
Electric Analyzer 32
Electric Annealing 34
Electric Annunciator Clock 127
Electric Arc Blow-pipe 84
Electric Aura 53
Electric Automatic Fire Extinguisher 257
Electric Axis 54
Electric Balance 577
Electric Bath, Bipolar 57
Electric Bath, Multipolar 57
Electric Bath, Unipolar 57
Electric Bell 79
Electric Bell, Automatic 78
Electric Bioscopy 82
Electric Blasting 83
Electric Bleaching 83
Electric Boat 84
Electric Boiler Feed 84
Electric Branding 87
Electric Brazing 87
Electric Breath Figures 89
Electric Breeze 89
Electric Buoy 93
Electric Candle 99
Electric Case Hardening 109
Electric Cautery 109
Electric Chimes 118
Electric Chronograph 118
Electric Circuit, Active 123
Electric Clock, Self-winding 128
Electric Coil 133
Electric Column 139
Electric Contact 147
Electric Convection 149
Electric Convection of Heat 149, 286
Electric Counter 156
Electric Crucible 158
Electric Crystallization 158
Electric Death 177
Electric Density 115
Electric Dental Mallet 180
Electric Diapason 182
Electric Displacement 189
Electric Door Opener 190
Electric Double Refraction 454
Electric Drill 191
Electric Drum 193
Electric Dyeing 193
Electric Eel 204
Electric Efficiency 205
Electric Effluvium 206
Electric Elasticity 206
Electric Endosmose 238
Electric Energy 239
Electric Energy, Coefficient of 205
Electric Energy, Systems of Distribution of 190
Electric Engraving 245
Electric Entropy 242
Electric Etching 245
Electric Evaporation 246
Electric Excitability of Animal Systems 247
Electric Exosmose 247
Electric Expansion 247
Electric Fire Alarm, Automatic 257
Electric Floor Matting 369
Electric Fluid 258
Electric Fly or Flyer 259
Electric Fog 259
Electric Furnace 263
Electric Fuse 264
Electric Gas Burners 93
Electric Headlight 285
Electric Head Bath 284
Electric Heat 285
Electric Heater 286
Electric Horse Power 290
Electric Image 296
Electric Incandescence 297
Electric Influence 305
Electric Insulation 305
Electricities, Separation of 479
Electricity 206
Electricity, Animal 33
Electricity, Atmospheric 51
Electricity, Cal 208
Electricity, Conservation of 146
Electricity, Contact 147
Electricity, Dissimulated 189
Electricity, Dynamic 193
Electricity, Frictional 262
Electricity, Latent 323
Electricity, Negative 389
Electricity, Plant 317
Electricity, Positive 428
Electricity, Specific Heat of 491
Electricity, Static 493
Electricity, Storage of 495
Electricity, Voltaic 563
Electricity, Vitreous 562
Electric Machine, Plate 417
Electric Machine, Wimshurst 577
Electric Mains 367
Electric Mass 368
Electric Matter 368
Electric Meter, Chemical 375
Electric Meter, Thermal 375
Electric Meter, Time 375
Electric Mortar 382
Electric Motor 382
Electric or Electrostatic Capacity 102
Electric Organ 397
Electric Oscillations 398
Electric Osmose 398
Electric Pen 405
Electric Pendulum 405
Electric Piano 415
Electric Picture 415
Electric Pistol 416
Electric Popgun 282
Electric Portrait 415
Electric Potential Difference 429
Electric Potential, Unit of 432
Electric Power 433
Electric Pressure 434
Electric Probe 435
Electric Prostration 437
Electric Protector 437
Electric Radiometer 447
Electric Ray 450
Electric Rectification of Alcohol 18
Electric Reduction of Ores 453
Electric Reduction of Phosphorous 410
Electric Register 454
Electric Residue 116, 460
Electricity, Resinous 461
Electric Resonance 468
Electric Resonator 470
Electric Rings 392
Electrics 208
Electric Saw 476
Electric Screen, 476
Electric Shadow 480
Electric Shock 482
Electric Shower Bath 57
Electric Soldering 487
Electric Spark, Duration of 490
Electric Sphygmophone 491
Electric Storms 495
Electric Striae 496
Electric Subway 496
Electric Subway, Underground 552
Electric Sunstroke 497
Electric Superficial Density 180
Electric Swaging 499
Electric Tele-barometer 504
Electric Telemanometer 521
Electric Telemeter 521
Electric Tempering 527
Electric Tension 529
Electric Thermometer 535
Electric Thermostat 537
Electric Torpedo 543
Electric Tower 545
Electric Transmission of Energy 240
Electric Trumpet 550
Electric Tube 550
Electric Typewriter 551
Electric Unit of Work 580
Electric Varnish 559
Electric Welding 574
Electric Whirl 577
Electric Wind 578
Electrification 208
Electrification by Cleavage 127
Electrification by Pressure 434
Electrified Body, Energy of an . 241
Electrization 208
Electro-biology 208
Electro-capillarity 209
Electro-chemical Equivalents 209, 244
Electro-chemical Series 209
Electro-chemistry 209
Electro-culture 209
Electrode 210
Electrode, Indifferent 210
Electrodes, Erb's Standard of 210
Electrodes, Non-polarizable 210
Electrodes, Shovel 483
Electrode, Therapeutic 210
Electro-diagnosis 181, 210
Electro-dynamic 211
Electro-dynamic Attraction and Repulsion, 211
Electro-dynamic Rotation of Liquids 474
Electro-dynamometer, Siemens' 212
Electro-gilding 277
Electro-kinetic 211
Electrolier 212
Electrolysis 212
Electrolysis, Laws of 213
Electrolyte 214
Electrolytic Analysis 214
Electrolytic Cell 109
Electrolytic Clock 128
Electrolytic Conduction 215
Electrolytic Convection 149, 214
Electrolytic Deposit 180
Electrolytic Iron 308
Electrolytic Resistance 464
Electro-magnet 215, 337
Electro-magnet, Annular 216
Electro-magnet, Bar 217
Electro-magnet, Club-foot 217
Electro-magnet, Hinged 217
Electro-magnet, Hughes' 291
Electro-magnetic Ammeter 27
Electro-magnetic and Magnetic Equipotential Surface 244
Electro-magnetic Attraction and Repulsion 217
Electro-magnetic Brake 86
Electro-magnetic Clutch 128
Electro-magnetic Control 218
Electro-magnetic Eye 248
Electro-magnetic Field of Force 218
Electro-magnetic Force 260
Electro-magnetic Gun 282
Electro-magnetic Induction 218, 299
Electro-magnetic Inertia 305
Electro-magnetic Induction, Mutual 302
Electro-magnetic Interrupter for Tuning Fork 307
Electro-magnetic Leakage 219
Electro-magnetic Lines of Force 219
Electro-magnetic Liquids, Rotation of 475
Electro-magnetic Meter 375
Electro-magnetic Quantity 445
Electro-magnetic Quantity, Practical Unit of 445
Electro-magnetic Shunt .483
Electro-magnetic Stress 219, 496
Electro-magnetic Theory of Light 219
Electro-magnetic Unit of Energy 220
Electro-magnetic Vibrator 561
Electro-magnetic Waves, 573
Electro-magnet, Ironclad 219
Electro-magnetism 220
Electro-magnet, Joule's 337
Electro-magnet, Long Range 220
Electro-magnet, One Coil 219
Electro-magnet, Plunger 220
Electro-magnet, Polarized 220
Electro-magnets, Interlocking 221
Electro-magnets, Multiple Wire Method of Working 388
Electro-magnet, Stopped Coil 221
Electro-magnets, Surgical 222
Electro-mechanical Bell 80
Electro-mechanical Equivalent 244
Electro-medical Baths 222
Electro-medical Battery, Pulvermacher's 69
Electro-metallurgy 222
Electrometer 222
Electrometer, Absolute 222
Electrometer. Attracted Disc 223
Electrometer, Capillary 224
Electrometer Gauge 226
Electrometer, Lane's 226
Electrometer, Quadrant 226
Electrometer, Thermo- 536
Electrometer, Weight 223
Electro-motive Force 227
Electro-motive Force, Counter- 228
Electro-motive Force Curve 170
Electro-motive Force, Impressed 297
Electro-motive Force, Motor 384
Electro-motive Force. Oscillatory 398
Electro-motive Force, Transverse 549
Electro-motive Force, Unit 228
Electro-motive Intensity 228
Electro-motive Potential Difference 429
Electro-motive Series 228
Electro-motograph 229
Electro-motor 229
Electro-muscular Excitation 229
Electro-negative 229
Electro-optics 229
Electrophoric Action 230
Electrophorus 230
Electro-physiology 231
Electroplating 231, 418
Electroplating Dynamo 198
Electro-pneumatic Signals 231
Electropoion Fluid 232
Electro-positive 232
Electro-puncture 232
Electro-receptive 232
Electroscope 232
Electroscope, Bennett's 233
Electroscope, Bohenberger's 233
Electroscope, Condensing 233
Electroscope, Gold Leaf 233
Electroscope, Pith Ball 234
Electrostatic Attraction and Repulsion 234
Electrostatic Attraction and Repulsion. Coulomb's Law of 155
Electrostatic Circuit 123
Electrostatic Equipotential Surface 244
Electrostatic Field of Force 254
Electrostatic Force 260
Electrostatic Induction 302
Electrostatic Induction, Coefficient of 234
Electrostatic Induction, Mutual 303
Electrostatic Lines of Force 234
Electrostatic Quantity 445
Electrostatic Refraction 235
Electrostatics 235
Electrostatic Series 235
Electrostatic Stress 236, 496
Electrostatic Telephone 526
Electrostatic Voltmeter 571
Electro-thermal Equivalent 245
Electro-therapeutics or Therapy 236
Electrotonic State 493
Electrotonus 236
Electrotype 236
Element, Chemical 236
Element, Galvanic 264
Element, Mathematical 237
Element, Negative 390
Element of a Battery Cell 237
Element, Positive 277
Elements, Electrical Classification of 237
Elements, Magnetic 342
Elements of Battery 63
Elements, Thermo-electric 237
Element, Voltaic 237
Elias' Method of Magnetization 360
Elongation 237, 540
Elongation, Magnetic 344
Embosser, Telegraph 237
E. M. D. P. 238
E. M. F. 238
Energy 238
Energy, Atomic 238
Energy, Chemical 239
Energy, Conservation of 239
Energy, Degradation of 239
Energy, Electric 239
Energy, Electrical, Coefficient of 205
Energy, Electric Transmission of 240
Energy, Electro-magnetic, Unit of 220
Energy, Kinetic 241
Energy, Mechanical 241
Energy Meter 375
Energy, Molar 241
Energy, Molecular 241
Energy of an Electrified Body 241
Energy of Dielectric 183
Energy of Position 211
Energy of Stress 241
Energy, Physical 241
Energy, Potential, or Static 241
Energy, Radiant 446
Energy, Thermal 242
End-on Method 238
End or Pole, Marked 368
Endosmose, Electric 238
End Play 238
End, Unmarked 556
English Absolute or Foot Second Unit of Resistance 465
Engraving, Electric 245
Entropy 242
Entropy, Electric 242
Epinus Condenser 242
E. P. S. 243
Equator, Magnetic 344
Equator of Magnet 337
Equipotential 244
Equipotential Surface 498
Equipotential Surface, Electrostatic 244
Equipotential Surface, Magnetic and Electro-magnetic 244
Equalizer 243
Equalizer, Feeder 251
Equalizing Dynamo 198
Equivalent, Chemical 116, 244
Equivalent Conductors 146
Equivalent, Electro-thermal 245
Equivalent, Joule's 311
Equivalent Resistance 465
Equivalents, Electro-chemical 209, 244
Equivalent, Thermo-chemical 245
Equivalent, Water 572
Equivolt 245
Erb's Standard of Electrodes 210
Erg 245
Erg-ten 245
Error, Heating 286
Escape 245
Essential Resistance 465, 466
Etching, Electric 245
Ethene 397
Ether 246
Eudiometer 246
Evaporation, Electric 246
Ewing's Theory of Magnetism 356
Exchange, Telephone 246
Excitation, Electro-muscular 229
Excitability, Faradic 246
Excitability, Galvanic 247
Excitability of Animal System, Electric 247
Exciter 247
Exosmose, Electric 247
Expansion, Coefficient of 247
Expansion, Electric 247
Experiment, Franklin's 261
Experiment, Hall's 284
Experiment, Kerr's 312
Experiment, Matteueci's 369
Experiments, Hertz's 470
Experiment, Volta's Fundamental 567
Experiment with Frog, Galvani's 262
Exploder 247
Explorer 247
Exploring Coil 350
Explosive Distance 190
Extension Bell Call 248
Extension, Polar 423
External Characteristic 114
External Characteristic Curve 171
External Circuit 123
External Resistance 465, 467
Extinguisher, Automatic Electric Fire 257
Extra Current 162
Extra-polar Region 454
Eye, Electro-magnetic 248
Eye, Selenium 478
Facsimile Telegraph 510
Factor, Armature 45
Fahrenheit Scale 248
Fall of Potential 430
False Poles, Magnetic 350
Farad 248
Faraday, Effect 249
Faraday's Cube 249
Faraday's Dark Space 249, 489
Faraday's Disc 249
Faraday's Net 250
Faraday's Ring 473
Faraday's Transformer 250
Faraday's Voltameter 250
Faradic 250
Faradic Battery 63
Faradic Brush 251
Faradic Current 162
Faradic Excitability 246
Faradization 251
Faradization, Galvano- 265
Far Leading Dynamo 198
Fault of a Dynamo, Ironwork 308
Faults 251
Faults, Contact 147
Feed Clockwork 128
Feeder 251
Feeder, Equalizer 251
Feeder, Main or Standard 251
Feeder, Negative 251
Feeder, Neutral 251
Feeder, Positive 251
Feeder, Switch 500
Feet, Ampere 30
Ferranti Effect 251
Ferric Chloride Battery 63
Ferro-magnetic 252
Fibre and Spring Suspension 252
Fibre Suspension 252
Field, Air 252
Field, Alternating 252
Field and Armature Reaction of Dynamo, 450
Field, Controlling 148
Field, Deflecting 178
Field Density 252
Field, Distortion of 252
Field, Drag of 254
Field, Intensity of a Magnetic 306
Field Magnet 337
Field of Force . 254
Field of Force, Electro-magnetic 218
Field of Force, Electrostatic 254
Field of Force, Magnetic 344
Field of Force of a Current 255
Field of Force, Uniform 553
Field, Pulsatory 256
Field, Rotating 256
Field, Stray 256, 495
Field, Uniform 256
Field, Uniform Magnetic 345
Field, Waste 256
Figure of Merit 256
Figures, Haldat's 284
Figures, Lichtenberg's 327
Figures, Magnetic 345
Filament 256
Filament, Magnetic 345
Filaments, Paper 402
File, Circuit Breaker 121
Finder, Position 427
Finder, Range 447
Finder, Wire 580
Fire Alarm, Electric Automatic 257
Fire and Heat Alarm 17
Fire Extinguisher, Electric Automatic 257
Fire Cleansing 257
Fire, St. Elmo's 494
Fishing Box 311
Flashing in a Dynamo or Magneto-Electric Generator 257
Flashing of Incandescent Lamp Carbons 257
Flashing Over 258
Flash, Side 484
Flat Cable 96
Flat Coil 133
Flat Ring Armature 45
Flats 258
Flats in Commutator 140
Flexible Cord 152
Floating Battery, De la Rive's 179
Floating Magnets, Meyer's 370
Floor Matting, Electric 369
Floor Push 258
Fluid, Depolarizing 258
Fluid, Electric 258
Fluid, Electropoion 232
Fluid, Insulator. 306
Fluid, North Magnetic 357
Fluids, Magnetic 345
Fluid, South Magnetic 356
Fluid Theory, Single 486
Fluorescence 258
Flush Boxes 258
Fluviograph 259
Flux, Magnetic 345
Fly or Flyer, Electric 259
Foci Magnetic 259
Fog, Electric 259
Following Horns 259
Foot-candle 259
Foot, Mil- 379
Foot-pound 259
Foot-step 259
Force 259
Force, Annular 544
Force, Axial 544
Force, Centrifugal 112
Force, Coercive or Coercitive 131-471
Force, Controlling 148
Force, Counter-electro-motive 156
Force de Cheval 260
Force, Electro-magnetic 260
Force, Electro-motive 227
Force, Electro-motive, Transverse 549
Force, Electrostatic 260
Force, Field of 254
Force, Field of, of a Current 255
Force, Field of, Electrostatic 254
Force, Kapp Line of 312
Force, Lines of 330
Force, Magnetic 346
Force, Magnetic Field of 344
Force, Magnetic Lines of 348
Force, Magneto-motive 365
Force, Motor Electro-motive 384
Force of Polarization, Back Electro-motive 156
Force, Oscillatory, Electro-motive 398
Force, Photo-electro-motive 410
Forces, Composition of 260
Forces, Parallelogram of 260
Forces, Resolution of 261
Force, True Contact 549
Force, Tubes of 261
Force, Unit of 261
Forked Circuits 126
Fork, Tuning, Dynamo 202
Forming 261
Formula of Merit 256
Foucault Current 163
Foundation Ring 261
Fourth State of Matter 261
Frame 261
Frame, Resistance 465
Franklinic Current 163
Franklin's Experiment 261
Franklin's Plate 262
Franklin's Theory 262-486
Free Charge 115
Free Magnetism 356
Frequency 262
Frequency, High 289
Frictional Electricity 262
Frictional Electric Machine 333
Frictional Heating 262
Friction Gear, Magnetic 276
Friction, Magnetic 295-346
Fringe 262
Frog, Galvani's Experiment with 262
Frog, Rheoscopic 262
Frying 263
Fulgurite 263
Fuller's Battery 63
Fulminating Pane 262
Fundamental Unit 554
Furnace, Electric 263
Fuse Block 175
Fuse Board 263
Fuse Box 263
Fuse, Cockburn 263
Fuse, Electric 264
Fuse Links 330
Fuse, Safety 175-475
Galvanic 264
Galvanic Action, Volta's Law of 568
Galvanic Dosage 190
Galvanic Element 264
Galvanic Excitability 247
Galvanic or Voltaic Battery 76
Galvanic or Voltaic Circle 119
Galvanic or Voltaic Couple 156
Galvanic Polarization 265
Galvani's Experiment with Frog 262
Galvanism 265
Galvanization 265
Galvanization, Labile 265
Galvanized Iron 265
Galvano-cautery 109
Galvano-cautery, Chemical 265
Galvano-electric Cautery 109
Galvano-faradization 265
Galvanometer 265
Galvanometer, Absolute 266
Galvanometer, Aperiodic 266
Galvanometer, Astatic 266
Galvanometer, Ballistic 267
Galvanometer Constant 268
Galvanometer, Differential 268
Galvanometer, Direct Reading 269
Galvanometer, Marine 269
Galvanometer, Mirror 271
Galvanometer, Potential 269
Galvanometer, Proportional 269
Galvanometer, Quantity 269
Galvanometer, Reflecting 270
Galvanometer, Shunt 271-483
Galvanometer, Sine 271
Galvanometer, Tangent 272
Galvanometer, Torsion 273-544
Galvanometer, Upright 274
Galvanometer, Vertical 274
Galvanometer, Volt and Ampere Meter 274
Galvano-plastics 275
Galvano-puncture 232-275
Galvanoscope 275
Galvano-thermal Cautery 100
Gap, Spark 490
Gas Battery 63
Gas Battery, Grove's 281
Gas Burner, Electric 93
Gas, Carbonic Acid 108
Gas, Electrolytic 275
Gases, Magnetism of 357
Gases, Mixed 275
Gas Jet, Carcel 108
Gas, Olefiant 397
Gassing 275
Gassiot s Cascade 275
Gastroscope 275
Gas Voltameter 564
Gauge, Battery 64
Gauge, Electrometer 226
Gauss 275
Gauss' Principle 276
Gauss, Tangent Positions of 276
Gauze Brush, Wire 92
Gear, Magnetic 346
Gear, Magnetic Friction 276
Geissler Pump 437
Geissler Tubes 276
Generating Plate 277
Generator, Current 277
Generator Inductor 199
Generator, Magneto-electric 362
Generator, Magneto-electric, Flashing in a Dynamo or 257
Generator, Motor 384
Generator, Pyromagnetic. 442
Generators and Motors, Commutator of Current 140
Generator, Secondary 277-477
Geographic Meridian 372
German Mile Unit of Resistance 466
German Silver 277
German Standard Candle 99
Gilding, Electro- 277
Gilding Metal 277
Gimbals 278
Girder Armature 49
Glass 278
Globe or Globular Lightning 330
Glow Discharge 187
Gold 278
Gold Bath 279
Gold Leaf Electroscope 233
Gold Stripping Bath 279
Governor, Centrifugal 113
Governor, Rate 449
Graduator 279
Gram 280
Gram-atom 280
Gram-molecule 280
Graphite 280
Gravitation 280
Gravity, Acceleration of 280
Gravity Ammeter 27
Gravity Battery 64
Gravity, Centre of 112
Gravity Control 281
Gravity Drop Annunciator 35
Grease Spot 92
Green Vitriol 562
Grenet Battery 65
Grid 281
Grid Plug 420
Grip, Cable 96
Gross Efficiency 205
Ground 281
Grounded Circuit 123
Ground Plate 417
Ground Wire 281
Grove's Battery 65
Grove's Gas Battery 281
Guard Ring 282
Guard Tube 282
Gun, Electro-magnetic 282
Gutta Percha 282
Gyration, Centre of 112
Gyrostatic Action of Armatures 283
H 283
H Armature 49
Haarlem Magnet 337
Hair, Removal of, by Electrolysis 283
Haldat's Figures 284
Hall Effect 284
Hall Effect, Real 284
Hall Effect, Spurious 284
Halleyan Lines 308
Hall's Experiment 284
Halske's and Siemens' Battery 72
Hand Hole 190
Hanger Board 284
Hanger, Cable 96
Hanger, Cable, Tongs 97
Harcourt's Pentane Standard 406
Hare's Deflagrator 73
Harmonic 23
Harmonic Curve 174, 485
Harmonic Motion, Simple 486
Harmonic Receiver 284, 451
Head Bath, Electric 284
Head-light, Electric 285
Head, Torsion 544
Heat 285
Heat and Fire Alarm 17
Heat, Atomic 52, 285
Heat, Electric 285
Heat, Electric, Convection of 149, 286
Heat, Irreversible. 286
Heat, Mechanical Equivalent of 286
Heat, Molecular 286
Heat, Specific 286
Heat, Specific, of Electricity 288
Heat Units 288
Heater, Electric 286
Heating, Admiralty Rules of 12
Heating Error 286
Heating, Frictional 262
Heating Magnet 286
Heavy Carburetted Hydrogen, 397
Hecto 288
Hedgehog Transformer 548
Heliograph 288
Helix 288
Henley's Universal Discharger 189
Henry 288
Henry's Coils 138
Hermetically Sealed 289
Hertz's Experiments 470
Heterostatic Method 280
Hexode Working 581
High Bars of Commutator 289
High Frequency 289
High Vacuum 557
Hinged Armature 45
Hinged Electro-magnet 217
Hissing 289
Hittorf's Resistance 466
Hittorf's Solution 289
Hoffer's Method of Magnetization 360
Hole Armature 45
Hole, Hand 190
Holders 289
Holder, Brush 91
Holder, Candle 99
Holders, Carbon 107
Holophote Lamp 321
Holtz's Influence Machine 334
Home Station 493
Hood 290
Horizontal Induction 302
Horns 290
Horns, Driving 132
Horns, Following 259
Horns, Leading 324
Horns, Trailing 259
Horse Power 290
Horse Power, Actual 290
Horse Power Curve 171
Horse Power, Electric 290
Horse Power Hour 290
Horse Power, Indicated 290
Horseshoe Magnet 337
Hour, Ampere- 30
Hour, Horse Power 290
H. P. 290
Hughes' Electro-magnet 291
Hughes' Induction Balance 291
Hughes' Sonometer 488
Hughes' Telegraph 511
Hughes' Theory of Magnetism 357
Hughes' Type Printer 511
Human Body, Resistance of 467
Hydrochloric Acid Battery 66
Hydro-electric 293
Hydro-electric Machine 293
Hydrogen 294
Hydrogen, Carburetted, Heavy 397
Hydrometer, Beaumé 78
Hygrometer 294
Hyperbolic Logarithms 389
Hysteresis 295
Hysteresis, Magnetic 294
Hysteresis, Static 295
Hysteresis, Viscous 295, 356
Idioelectrics 295
Idiostatic Method 295
Idle Coils 295
Idle Poles 296
Idle Wire 291
Igniter 296
I. H P. 296
Illuminating Power 296
Illuminating Power, Spherical 296
Illuminating Power, Standard of, Viole's 561
Illumination, Unit of 296
Image, Electric 296
Imbricated Conductor 146
Immersion, Simple 185
Impedance 297, 462
Impedance, Impulsive 297
Impedance, Oscillatory 297
Impressed Electro-motive Force 297
Impulse 297
Impulsive Discharge 188
Impulsive Impedance 297
In-and-out, Soaking 486
Incandescence, Electric 297
Incandescent Lamp 321
Incandescent Lamp Carbons, Flashing of 257
Incandescent Lamp, Chamber of 113
Incandescent Lamp, Life of 327
Incandescent Lamp, Three Filament 322
Inclination Compass 142
Inclination, Magnetic 346
Inclination Map 297
Inclination or Dip, Angle of 33
Incomplete Circuit 125
Increment Key 314
Independence of Currents in Parallel Circuits 297
India Rubber 102
Indicated Horse Power 290
Indicating Bell 80, 297
Indicator 298
Indicator, Circuit 298
Indicator, Throw-back 540
Indicator, Volt 568
Indifferent Electrode 210
Indifferent Point 421
Induced Current 163
Induced Magnetization, Coefficient of 354, 359
Inductance 298
Inductance Balance 293
Inductance Bridge 293
Induction, Anti-, Conductor 36
Induction, Back 55
Induction Balance, Hughes 291
Induction, Coefficient of Magnetic 349
Induction, Coefficient of Mutual 301
Induction, Coefficient of Self- 298
Induction Coil 133
Induction Coil, Inverted 136
Induction Coil, Telephone 137, 526
Induction, Cross 298
Induction Current 163
Induction, Electro-magnetic 218, 299
Induction, Electrostatic 302
Induction, Electrostatic, Coefficient of 234
Induction, Horizontal 302
Induction, Lateral 302
Induction, Lines of 330
Induction, Magnetic 302, 346
Induction, Magnetic, Apparent Coefficient of 346
Induction, Magnetic, Coefficient of 346
Induction, Magnetic Dynamic 347
Induction, Magnetic, Self- 352
Induction, Magnetic Static 347
Induction, Magnetic, Tube of 347
Induction, Mutual, Electro-magnetic 302
Induction, Mutual, Electrostatic 303
Induction, Open Circuit 303
Induction, Oscillatory 398
Induction Protector, Mutual 481
Induction, Self- 303
Induction Sheath 303
Induction. Unipolar 304
Induction, Unit of Self- 304
Induction, Vertical 304
Inductive Capacity, Magnetic 346, 349
Inductive Effect, Counter- 204
Inductive Resistance 466
Inductophone 304
Inductor 305
Inductor Dynamo 199
Inductor Generator 199
Inductor, Magneto- 363
Inductor, Pacinotti's 400
Inductorium 138
Inertia 305
Inertia, Electro-magnetic 305
Inertia, Magnetic 347
Infinity Plug 305, 420
Influence, Electric 305
Influence Machine 334
Influence Machine, Armature of 46
Influence Machine, Holtz 334
Influence, Magnetic 346
Installation 305
Instantaneous Capacity 102
Insulating Stool 305
Insulating Tape 305
Insulating Varnish 306
Insulation, Electric 305
Insulation, Magnetic 347
Insulation, Oil 396
Insulation Resistance 466
Insulator 306
Insulator Caps 306
Insulator, Fluid 306
Insulator, Line or Telegraph 306
Intensity 306
Intensity Armature 45
Intensity Current 163
Intensity, Electro-motive 228
Intensity, Magnetic 348
Intensity of a Magnetic Field 306
Intensity of Magnetization 360
Intensity, Poles of 426
Inter-air Space 489
Intercrossing 307
Interference, Armature 45
Interferric Space 489
Interior Pole Dynamo 191
Interlocking- Electro-magnets. 229
Intermediate Metals, Law of 323
Intermittent, 307
Internal Characteristic 114
Internal Resistance 466
lnterpolar Conductor 307
Interpolar Region 307
Interpolation 307
Interrupter, Electro-magnetic, for Tuning Fork 307
Intrinsic Efficiency 205
Invariable Calibration 97
Inverse Induced Current 163
Inverse Squares, Law of 323
Inversion, Thermo-electric 533
Ions 307
Iron 308
Ironclad Dynamo 200
Ironclad Electro-magnet, 219
Ironclad Magnet 356
Iron Disc Ammeter, Eccentric 27
Iron, Electrolytic 308
Iron, Galvanized 265
Ironwork Fault of a Dynamo 308
Irreversible Heat 286
Isochasmen Curve 171
Isochronism 308
Isoclinic Lines 308
Isoclinic Map 308
Isodynamic Lines 308
Isodynamic Map 308
Isoelectric Points 422
Isogonal Lines 308
Isogonic Map 309
Isolated Distribution 309
Isolated Plant 309
Isolated Supply 309
Isotropic 309
Isthmus Method of Magnetization 360
I. W. G., 309
J 309
Jablochkoff Candle 160
Jack. Spring- 492
Jacketed Magnet 356
Jacobi's Law 309
Jacobi's Method of Magnetization 360
Jacobi's Unit of Current 163
Jacobi's Unit of Resistance 466
Jamin Candle 100
Jar, Leyden 325
Jar, Lightning 330
Jar, Luminous 332
Jars, Leyden, Charging and Discharging 108
Jar, Unit 554
Jewelry 309
Joulad 311
Joule 311
Joule Effect 311
Joule's Electro-magnet 337
Joule's Equivalent, 311
Joint, American Twist 309
Joint, Britannia 309
Joint, Butt 310
Joint Current 160
Joint, Lap 310
Joint, Marriage 310
Joint, Resistance 464
Joints in Belts 311
Joint, Sleeve 310
Joint, Splayed 311
Junction Box 311
Junction, Thermo-electric 533
K. 311
Kaolin 311
Kapp. Line of Force 312
Kathelectrotonus 312
Kathode 312
Kathodic Closure Contraction 312
Kathodic Duration Contraction 312
K. C. C. 312
K. D. C. 312
Kempe's Discharge Key 315
Keeper 312
Kerr Effect 235, 312
Kerr's Experiment 312
Key 313
Key Board 313
Key, Bridge 313
Key, Double Contact 314
Key, Double Tapper 314
Key, Charge and Discharge 313
Key, Increment 314
Key, Kempe's Discharge 315
Key, Magneto-electric 315
Key, Make and Break 316
Key, Plug 316
Key, Reversing 316
Key, Sliding-contact 316
Key, Telegraph 316
Kicking Coil 132
Kilo 316
Kilodyne 316
Kilogram 317
Kilojoule 317
Kilometer 317
Kilowatt 317
Kine 317
Kinnersley's Thermometer 536
Kinetics, Electro- 211
Kinetic Energy 241
Kirchoff's Laws 317
Knife Break Switch 501
Knife Edge Suspension 317
Knife Edge Switch 501
Knife Switch 501
Knot 317
Kohlrausch's Law 317
Kookogey's Solution 318
Krizik's Cores 318
L 318
Lag, Angle of 33, 318
Lag, Electric 332
Lag, Magnetic 348
Lalande & Chaperon Battery 69
Lalande-Edison Battery 69
Lamellar Distribution of Magnetism 357
Laminated 318
Laminated Core 154
Laminated Core, Tangentially 155
Lamination 318
Lamination of Armature Conductors 319
Lamination of Magnet 361
Lamp, Arc 319
Lamp, Arc, Double Carbon 191
Lamp Carbons, Flashing of Incandescent 257
Lamp, Carcel 108
Lamp, Contact 320
Lamp, Differential Arc 320
Lamp Globe, Waterproof 572
Lamp, Holophote 321
Lamp-hour 321
Lamp, Incandescent 321
Lamp, Incandescent, Chamber of 113
Lamp, Incandescent, Three Filament 322
Lamp, Life of Incandescent 327
Lamp, Lighthouse 322
Lamp, Monophote 321
Lamp, Pilot 323
Lamp, Polyphote 323
Lamp, Semi-Incandescent 323
Lamp-socket 323
Lamps, Bank of 323
Lane's Electrometer 226
Langdon Davies' Rate Governor or Phonophone 450
Lenz's Law 325
Lap Joint 310
Lap Winding 570
Latent Electricity 323
Lateral Discharge 188
Lateral Induction 302
Latitude, Magnetic 348
Law, Jacobi's 309
Law, Kohlrausch's 317
Law, Lenz's 325
Law of Angular Currents 165
Law of Electrolysis 213
Law of Intermediate Metals 323
Law of Inverse Squares 323
Law of Magnetic Attraction and Repulsion. Coulomb's 338
Law of Successive Temperatures 324
Law, Magnus' 367
Law, Ohm's 396
Law, Pflüger's. 409
Law, Right Handed Screw 324
Law, Sine 486
Laws, Kirchoff's 317
Laws of Thermo-electricity, Becquerel's 78
Law, Tangent 502
Law, Voltametric 567
Lead 324
Lead, Angle of 33
Lead Chloride Battery 66
Lead of Brushes 90
Lead of Brushes, Negative 324
Lead, Peroxide of, Battery 69
Lead Sulphate Battery 66
Lead Tee 504
Leading Horns 324
Leading-in Wires 324
Leak 324
Leakage 324
Leakage Conductor 325
Leakage, Electro-magnetic 219
Leakage, Magnetic. 348
Leakage, Surface 498
Leclanché Agglomerate Battery 66
Leclanché Battery 66
Leg of Circuit 325
Legal Ohm 395
Legal Quadrant 444
Legal Volt 568
Length of Spark 490
Letter Boxes, Electric 325
Leyden Jar 325
Leyden Jar, Armature of 46
Leyden Jars, Battery of 68
Leyden Jars, Charging and Discharging 108
Leyden Jars, Sir William Thomson's 326
Lichtenberg's Figures 327
Life Curve 171
Life of Incandescent Lamp 327
Light, Electro-magnetic, Theory of 219
Light, Maxwell's Theory of 369
Lighthouse Lamp 322
Lightning 327
Lightning Arrester 328
Lightning Arrester, Counter-electro-motive Force 329
Lightning Arrester Plates 329
Lightning Arrester, Vacuum 329
Lightning, Ascending 330
Lightning, Globe or Globular 330
Lightning Jar 330
Lightning, Back Stroke or Shock of 55
Lime, Chloride of, Battery 61
Limit, Magnetic 348
Limit of Magnetization 361
Linear Current 164
Lineman's Detector 180
Line of Commutator, Neutral 300
Line of Contact 330
Line of Force, Kapp 312
Line of Magnet, Neutral 361
Line or Telegraph Insulator 306
Lines, Halleyan 308
Lines, Isoclinic 308
Lines, Isodynamic 308
Lines, Isogonal 308
Lines, Isogonic 308
Lines of Force 330
Lines of Force, Cutting of 175
Lines of Force, Electro-magnetic 219
Lines of Force, Electrostatic 234
Lines of Force, Magnetic 348
Lines of Induction 330
Lines of Slope 330
Lines or Points of Least Sparking 490
Lines, Trunk 550
Links, Fuse 330
Liquids, Electro-dynamic Rotation of 474
Liquids, Electro-magnetic Rotation of 475
Liquor, Spent 491
Listening Cam 330
Lithanode 331
Load 331
Load Curve 172
Load of Armature 46
Local Action 331
Local Battery 331
Local Circuit 331
Local Currents 163, 331
Localization 331
Locus 331
Lodestone 332
Logarithm 332
Logarithms, Hyperbolic 389
Logarithms, Napierian 389
Local Battery 66
Long Coil Magnet 361
Long Range Electro-magnet 220
Long Shunt and Series Winding 579
Long Shunt Winding 579
Loop 332
Loop Break 332
Loop, Circuit 125
Loop, Drip 192
Lost Amperes 30
Lost Volts 571
Low Vacuum 557
Luces 332
Luminous Jar 332
Luminous Pane 401
Luminous Tube 550
Lux 332
M 332
Machine, Cylinder Electric 333
Machine, Electric, Wimshurst 577
Machine, Frictional Electric 333
Machine, Holtz Influence 334
Machine, Hydro-electric 293
Machine, Influence 334
Machine, Nairne's Electrical 389
Machine, Plate Electrical 417
Machine, Rheostatic 472
Machine, Toeppler-Holtz 334
Machine, Wimshurst 335
Mack 335
Magic Circle 119
Magne-crystallic Action 335
Magnet 335
Magnet, Anomalous 335
Magnet, Artificial 335
Magnet, Axial 336
Magnet, Bar 336
Magnet, Bell Shaped 336
Magnet Coils, Sheath for 481
Magnet, Compensating 336
Magnet, Compound 336
Magnet, Controlling 185, 336
Magnet, Damping 336
Magnet, Deflection of 337
Magnet, Directing 185
Magnet, Electro- 215, 337
Magnet, Equator of 337
Magnet, Field 337
Magnet, Haarlem 337
Magnet, Heating 286
Magnet, Horseshoe 337
Magnet, Ironclad 356
Magnet, Joule's Electro- 337
Magnet-keeper 361
Magnet, Lamination of 361
Magnet, Long Coil 361
Magnet, Natural 361
Magnet, Neutral Line of 361
Magnet, Normal 361
Magnet Operation 365
Magnet, Permanent 365
Magnet Pole 365
Magnet, Portative Power of 366
Magnet, Projecting Power of a 435
Magnet, Relay 457
Magnet, Simple 366
Magnet, Solenoidal 366
Magnet, Sucking 366
Magnet, Unipolar 366
Magnet Coil 336
Magnet Core 336
Magnet Poles, Secondary 366
Magnet Pole, Unit 366
Magnetic Adherence 338
Magnetic and Electro-magnetic Equipotential Surface 244
Magnetic Attraction 338
Magnetic Attraction and Repulsion, Coulomb's Law of 338
Magnetic Axis 338
Magnetic Azimuth 338
Magnetic Battery 338
Magnetic Bridge 338
Magnetic Circuit 340
Magnetic Circuit, Curve of Saturation of 174
Magnetic Concentration of Ores 340
Magnetic Concentrator 340
Magnetic Continuity 340
Magnetic Conductance and Conductivity 340
Magnetic Control 341
Magnetic Couple 341
Magnetic Creeping 341
Magnetic Curves 341
Magnetic Cut Out 175
Magnetic Declination 342
Magnetic Density 342
Magnetic Dip 342, 346
Magnetic Discontinuity 342
Magnetic Double Circuit 340
Magnetic Eye, Electro- 248
Magnetic Elements 342
Magnetic Elongation 344
Magnetic Equator 344
Magnetic False Poles 350
Magnetic, Ferro- 252
Magnetic Field, Intensity of a 306
Magnetic Field of Force 344
Magnetic Field, Uniform 345
Magnetic Figures 345
Magnetic Filament 345
Magnetic Fluid, North 357
Magnetic Fluids 345
Magnetic Flux 345
Magnetic Force 346
Magnetic Friction 295, 346
Magnetic Friction Gear 276
Magnetic Fluid, South 356
Magnetic Foci 259
Magnetic Gear 346
Magnetic Hysteresis 294
Magnetic Inclination 346
Magnetic Induction 302
Magnetic Induction, Apparent Coefficient of 346
Magnetic Induction, Coefficient of 346-349
Magnetic Induction, Dynamic 347
Magnetic Induction, Static 347
Magnetic Induction, Tube of 347
Magnetic Inductive Capacity 349
Magnetic Inertia 347
Magnetic Influence 346
Magnetic Insulation 347

Magnetic Intensity 348
Magnetic Lag 348
Magnetic Latitude 348
Magnetic Leakage 348
'Magnetic Limit 348
Magnetic Lines of Force 348
Magnetic Mass 349
Magnetic Matter 349
Magnetic Memory 349
Magnetic Meridian 349
Magnetic Moment 349
Magnetic Needle 349
Magnetic Needle, Declination of the 178
Magnetic Needle, Dip of 185
Magnetic Needle, Oscillation of a 397
Magnetic Output 399
Magnetic Parallels 349
Magnetic Permeability 349
Magnetic Perturbations 350
Magnetic Poles 350
Magnetic Potential 350, 431
Magnetic Proof Piece 350
Magnetic Proof Plane 350
Magnetic Quantity 350
Magnetic Reluctance 351, 458
Magnetic Reluctivity 351
Magnetic Remanence 358
Magnetic Repulsion 338
Magnetic Resistance 458
Magnetic Retentivity 351
Magnetic Rotatory Polarization 351
Magnetic Saturation 251
Magnetic Screen 351
Magnetic Self-induction 352
Magnetic Separator 352
Magnetic Shell 352
Magnetic Shell, Strength of 352
Magnetic Shield 353
Magnetic Shunt 353
Magnetic Storms 353
Magnetic Strain 354
Magnetic Stress 354
Magnetic Susceptibility 254, 359
Magnetic Tick 354
Magnetic Top 542
Magnetic Twist 354
Magnetic Vane Ammeter 27
Magnetic Variations 354
Magnetism, Ampere's Theory of 354
Magnetism, Blue 355
Magnetism, Components of Earth's 356
Magnetism, Creeping of 356
Magnetism, Decay of 356
Magnetism, Discharge of 356
Magnetism, Electro 220
Magnetism, Ewing's Theory of 356
Magnetism, Free 356
Magnetism, Hughes' Theory of 357
Magnetism, Lamellar Distribution of 357
Magnetism of Gases 357
Magnetism, Red 357
Magnetism, Residual 358
Magnetism, Solenoidal Distribution of 358
Magnetism, Sub-permanent 358
Magnetism, Terrestrial 358
Magnetism, Weber's Theory of 358
Magnetization by the Earth 359
Magnetization by Double Touch 358
Magnetization by Separate Touch 359
Magnetization by Single Touch 359
Magnetization, Coefficient of Induced 359
Magnetization Curve 172
Magnetization, Cycle of 360
Magnetization, Elias' Method of 360
Magnetization, Hoffer's Method of 360
Magnetization, Intensity of 360
Magnetization, Isthmus Method of 360
Magnetization, Jacobi's Method 360
Magnetization, Limit of 361
Magnetization, Maximum 361
Magnetization, Specific 361
Magnetization, Surface 356
Magnetizing Coil 127
Magneto 361
Magneto Bell 80
Magneto Call Bell 361
Magneto-electric 361
Magneto-electric Brake 362
Magneto-electric Generator 362
Magneto-electric Generator, or Dynamo, Flashing in a 257
Magneto-electric Key 315
Magneto-electric Telegraph 512
Magnetograph 363
Magneto-inductor 363
Magnetometer 363
Magnetometer, Differential 365
Magnetometry 364
Magneto-motive Force 365
Magnetophone 367
Magnetoscope 365
Magnifying Spring Ammeter 28
Magnus' Law 367
Main Battery 66
Main Battery Circuit 125
Main Circuit 125
Main or Standard Feeder 251
Mains, Electric 367
Make 367
Make and Break Current 164, 367
Make and Break Key 316
Make-induced Current 163
Malapterurus 367
Map, Declination 309
Map, Inclination 297
Map, Isoclinic 308
Map, Isodynamic 308
Map, Isogonic 309
Marié Davy's Battery 67
Marine Galvanometer 269
Mariner's Compass 142
Marked End or Pole 368
Marriage Joint 310
Mass, Electric 368
Mass, Magnetic 349
Master Clock 127
Mathematical Element 237
Matteueci's Experiment 369
Matter, Electric 368
Matter, Fourth State of 261
Matter, Magnetic 349
Matter, Radiant 368
Matter, Ultra Gaseous 551
Matthiessen's Meter-gram Standard Resistance,. 466
Matthiessen's Unit of Resistance 466
Matting, Electric Floor 369
Maximum Magnetization 361
Maxwell's Theory of Light 369
Mayer's Floating Magnet 370
Maynooth's Battery 67
Measurement, Absolute 8
Measurements 370
Mechanical Equivalent of Heat 286
Mechanical Energy 241
Mechanical Equivalent, Electro- 244
Medical Battery 67
Medium, Polarization of the 424
Meg or Mega 370
Meidinger's Battery 68
Memoria Technica, Ampére's 30
Memory, Magnetic 349
Mercury 371
Mercury Bichromate, Battery 63
Mercury Circuit Breaker 121
Mercury Cups 371
Mercury, Sulphate of, Battery 67
Mercurial Air Pump 16
Meridian, Astronomical 372
Meridian, Geographic 372
Meridian, Magnetic. 349
Merit, Figure of 256
Merit, Formula of 256
Metal, Gilding 277
Metallic Arc 39
Metallic Circuit 125
Metallochromes 392
Metallurgy, Electro- 222
Metals, Law of Intermediate 323
Meter. Alternating Current 373
Meter, Ampere and Volt, Galvanometer . 274
Meter, Balance Ampere 391
Meter Bridge 373
Meter Bridge, Slide 486
Meter Candle 374
Meter, Chemical Electric 375
Meter, Current 375
Meter, Electro-magnetic 375
Meter, Energy 375
Meter Gram Standard Resistance, Matthiesen's 466
Meter-millimeter 375
Meter-millimeter Unit of Resistance 466
Meter, Neutral Wire Ampere. 391
Meter, Quantity 445
Meters. Ampere 39
Meter, Thermal-Electric 375
Meter, Time Electric 375
Meter, Watt 375
Method, Broadside 89
Method, Deflection 178
Method, End on 238
Method, Idiostatic 295
Method, Multiple Wire 388
Method, Null 393
Method of Magnetization, Elias' 360
Method of Magnetization, Isthmus 360
Method of Magnetization, Jacobi's 360
Methven Standard or Screen 376
Mho, 376
Mica 376
Mica, Moulded 376
Micro 376
Micrometer 376
Micrometer, Arc 39, 376
Micrometer, Spark 470
Micron 376
Microphone 376
Microphone Relay 377, 457
Microscope. Photo-electric 410
Microtasimeter 377
Mil 379
Mil, Circular 379
Mil-foot 379
Mil-foot Unit of Resistance 467
Milli 379
Milligram 379
Millimeter 379
Milli-oerstedt 380
Mil, Square 379
Minute, Ampere- 30
Mirror Galvanometer. 271
Mixed Gases 275
mm. 380
Molar 380
Molar Energy 241
Molecular Affinity 380
Molecular Attraction 380
Molecular Bombardment 380
Molecular Chain 380
Molecular Energy 241
Molecular Heat 286
Molecular Rigidity 380, 473
Molecular Shadow 480
Molecule 380
Moment 381
Moment, Magnetic 349
Moment of Couple 544
Moment, Turning 544
Monophote Lamp 321
Mordey Effect 381
Morse Receiver 381
Morse Recorder 451
Morse Telegraph 512
Mortar, Electric 382
Motion, Currents of 167
Motograph, Electro- 229
Motor. Compound or Compound Wound,. 382
Motor, Differential 382
Motor, Dynamo 200
Motor, Electric 382
Motor, Electro- 229
Motor, Electro-motive Force 384
Motor-generator 384
Motor, Multiphase 384
Motor, Overtype 399
Motor, Prime 385
Motor, Pulsating 386
Motor, Pyromagnetic 442
Motor, Reciprocating 385
Motor, Series 386
Motor, Shunt 386
Moulded Mica 376
Moulding 58
Movable Secondary 477
Mud, Battery 68
Multiphase Currents 166
Multiphase Motor 384
Multiple 386
Multiple Arc 387
Multiple Arc Box 387
Multiple Connected Battery 68
Multiple-series 387, 480
Multiple Switch 501
Multiple Switch Board 387
Multiple Transformer 548
Multiple Winding 579
Multiple Wire Method 388
Multiplex Harmonic Telegraph 510
Multiplex Telegraph 514
Multiplex Telegraphy 388
Multiplier, Schweigger's 476
Multiplying Power 347, 349
Multiplying Power of a Shunt 388
Multipolar Armature 46
Multipolar Dynamo 200
Multipolar Electric Bath 57
Multipolar Winding 579
Muscular Pile 388
Mutual Electro-magnetic Induction 302
Mutual Electrostatic Induction 303
Mutual Induction, Coefficient of 301
Mutual Induction Protector 481
Myria 388
Nairne's Electrical Machine 389
Napierian Logarithms 389
Nascent State 389
Natural Currents 166, 389
Natural Magnet 361
Needle 389
Needle Annunciator 35
Needle, Astatic 50
Needle, Dipping 185
Needle, Magnetic 349
Needle, Orientation of a Magnetic 397
Needle of Oscillation 389
Needle Telegraph, Single 519
Needle, Telegraphic 389
Negative Charge 389
Negative Current 164
Negative Electricity 389
Negative, Electro- 229
Negative Element 390
Negative Feeder 251
Negative Lead of Brushes 324
Negative Plate 417
Negative Pole 425
Negative Potential 432
Negative Side of Circuit 125
Nerve and Muscle Current 164
Nerve Currents 390
Net Efficiency 205
Net, Faraday's 250
Network 390
Neutral Armature 46
Neutral Feeder 251
Neutral Line of Commutator 390
Neutral Line of Magnet 361
Neutral Point 421
Neutral Point of Commutator 390
Neutral Point, Thermo-electric 390
Neutral Relay Armature 46, 390
Neutral Temperature 390
Neutral Wire 390
Neutral Wire Ampere Meter 391
N. H. P. 391
Niaudet's Battery 61
Nickel 391
Nickel Bath 391
Night Bell 392
Nitric Acid Battery 68
Nobili's Rings 392
Nodal Point 422
Nodular Deposit 392
Nominal Candle Power 101
Non-conductor 392
Non-essential Resistance 465-467
Non-inductive Resistance 467
Non-polar Dynamo 200
Non-polarizable Electrodes 210
Non-Polarized Armature 46
Normal Magnet 361
North Magnetic Fluid 357
North Pole 392
North Seeking Pole 393
Null Method 393
Null Point 422
Occlusion 393
Oerstedt 394
Oerstedt's Discovery 394
Oerstedt, Milli- 380
Ohm 394
Ohmage 394
Ohm, B. A. 394
Ohm, Board of Trade 394
Ohm, Congress 395
Ohmic Resistance 394, 467
Ohm, Legal 395
Ohmmeter 395
Ohm, Rayleigh 396
Ohm's Law 396
Ohm, True 396
Oil Insulation 396
Oil Transformer 548
Old Armature, Siemens' 49
Olefiant Gas 397
Omnibus Bar 94
Omnibus Rod 94
Omnibus Wire 94
One Coil Electro-magnet 219
Open 397
Open Circuit 125
Open Circuit Battery 68
Open Circuit Induction 303
Open Circuit Oscillation 397
Open Coil Armature 46
Open Coil Dynamo 200
Opening Shock 482
Operation, Magnet 365
Opposed Current 164
Optics, Electro- 229
Orders of Currents 167
Ordinate 397
Ordinates, Axis of 54, 397
Ores, Electric Reduction of 453
Ores, Magnetic Concentration of 340
Organ, Electric 397
Orientation of a Magnetic Needle 397
Origin of Co-ordinates 397
Oscillation, Centre of 112
Oscillation, Electric 398
Oscillation, Needle of 389
Oscillation, Open Circuit 397
Oscillatory 23
Oscillatory Discharge 188
Oscillatory Displacement 398
Oscillatory Electro-motive Force 398
Oscillatory Impedance 297
Oscillatory Induction 398
Osmose, Electric 398
Outlet 399
Output 399
Output, Magnetic 399
Output, Unit of 399
Over-compounding 399
Over, Flashing 258
Overflow Alarm 18
Over-house Telegraph 515
Overload 399
Overtype Dynamo or Motor 399
Oxide of Copper Battery 68
Ozone 399
Pacinotti's Inductor 400
Pacinotti's Ring 400
Pacinotti Teeth 400
Page Effect 401
Page's Revolving Armature 47
Paillard Alloys 400
Palladium 401
Pane, Fulminating 262
Pane, Luminous 401
Pantelegraphy 402, 510
Paper Filaments 402
Parabola 402
Parabolic Reflector 402
Paraffine 402
Paraffine Wax 402
Paragrêles 403
Parallax 403
Parallel 403
Parallel Circuits 123-126
Parallelogram of Forces 260
Parallels, Magnetic 349
Paramagnetic 403
Paramagnetism 404
Parasitical Currents 163
Parchmentizing 404
Partial Current 164
Partial Earth 203, 404
Partial Vacuum 557
Passive State 404
Path, Alternative 24
P. D. 404
Peltier's Cross 405
Peltier Effect 404
Pen, Electric 405
Pendant Cord 405
Pendulum Circuit Breaker 121
Pendulum, Electric 405
Pendulum or Swinging Annunciator 35
Pentane Standard, Harcourt's 406
Pentode Working 581
Percussion, Centre of 112
Perforated Armature 45
Perforated Core Discs 154
Perforator 407
Period 407
Period, Vibration 560
Periodic 23
Periodic Current, Power of 433
Periodicity 262, 408
Peripolar Zone 582
Permanency 408
Permanent Magnet 365
Permanent Magnet Ammeter 28
Permanent State 408
Permeability 346-349
Permeability-temperature Curve, 174
Permeameter 408
Permeance 408
Peroxide of Lead Battery 69
Perturbations, Magnetic 350
Pflüger's Law 409
Phantom Wires 409
Phase 409
Phase, Retardation of 471
Phenomenon, Porret's 427
Pherope 409, 527
Philosopher's Egg 409
Phonautograph, 409
Phone 409
Phonic Wheel 409
Phonograph 410
Phonophone or Rate Governor, Langdon Davies' 450
Phonozenograph 410
Phosphorescence 410
Phosphorous, Electrical Reduction of 410
Photo-electric Microscope 410
Photo-electricity 410
Photo-electro-motive Force 410
Photometer 411
Photometer, Actinic 411
Photometer, Bar 411
Photometer, Bunsen's 412
Photometer, Calorimetric 412
Photometer, Dispersion 412
Photometer, Shadow 414
Photometer, Translucent Disc 412
Photophore 415
Photo-voltaic Effect 415
Physical Energy 241
Physiology, Electro- 231
Piano, Electric 415
Pickle 415
Picture, Electric 415
Piece, Bed 78
Piece, Magnetic Proof 350
Piece, Pole 423
Pierced Core-discs, 152
Pile 415
Pile, Differential Thermo-electric 533
Pile, Muscular 388
Pile or Battery, Thermo-electric 530
Pilot Brush 91
Pilot Lamp 323
Pilot Transformer 415
Pilot Wires 415
Pistol, Electric 416
Pith 416
Pith Ball Electroscope 234
Pith-balls 416
Pivoted Armature 47
Pivot Suspension 416
Plane, Magnetic Proof 350
Plant 417
Plant Electricity 417
Plant, Isolated 309
Planté's Secondary Battery, 72
Plate, Arrester 417
Plate Condenser 417
Plate, Earth 203
Plate Electrical Machine 417
Plate, Franklin's 262
Plate, Generating 277
Plate, Ground 417
Plate, Negative 417
Plate, Positive 277, 417
Plating Balance 417
Plating Bath 418
Plating, Electro- 418
Platinized Carbon Battery 69
Platinoid 418
Platinum 419
Platinum Alloy 419
Platinum Black 419
Platinum Silver Alloy 419
Platinum Sponge 419
Play, End 238
Plow 420
Plücker Tubes 420
Plug 420
Plug Cut Out 175
Plug, Double 191
Plug, Grid 420
Plug, Infinity 305, 420
Plug Key 316
Plug Switch 420
Plumbago 421
Plunge Battery 69
Plunge 421
Plunger and Coil 131
Plunger and Coil, Differential 132
Plunger, Coil and 131
Plunger Electro-magnet 220
Pneumatic Battery 69
Pneumatic Signals, Electro- 231
P.O. 421
Pockets, Armature 47
Poggendorf's Solution 421
Point, Contact 147
Point, Indifferent 421
Point, Neutral 421
Point. Nodal 422
Point, Null 422
Point of Commutator, Neutral 390
Point Poles 422
Points, Consequent 422
Points, Corresponding 422
Points, Iso-electric 422
Points of Derivation 180, 423
Point, Thermo-electric Neutral 390
Polar Angle 423
Polar Extension 423
Polarity, Diamagnetic 181, 423
Polarity, Resultant 470
Polarization 423
Polarization, Back Electro-motive force of 156
Polarization Capacity 424
Polarization, Dielectric 183
Polarization, Galvanic 265
Polarization, Magnetic Rotary 351
Polarization of the Medium 424
Polarized Armature 47
Polarized Electro-magnet 220
Polarized Relay 458
Polarized Relay, Tongue of 542
Polarizing Current 164
Polar Region 424
Polar Span 424
Polar Span, Angle of 32, 423
Polar Tips 423
Polar Zone 582
Pole, Analogous 31, 425
Pole, Antilogous 425
Pole, Armature 47
Pole, Austral 54
Pole, Boreal 85
Pole Brackets, Telegraph 515
Pole Changer 425
Pole Changing Switch, 501
Pole Dynamo, Interior 199
Pole, Magnet 366
Pole, Negative 425
Pole, North 392
Pole, North-seeking 393
Pole or End, Marked 368
Pole Piece 423
Pole Pieces 425
Pole, Positive 425
Pole, Salient 426
Pole, Terminal 529
Pole Tips 290, 426
Pole, Traveling 426
Pole, Unit Magnet 366
Poles 425
Poles, Compensating 426
Poles, Consequent 146
Poles, Idle 296
Poles, Magnetic 350
Poles, Magnetic, False 350
Poles of Intensity 426
Poles of Verticity 426, 560
Poles, Point 422
Poles, Secondary 478
Poles, Secondary Magnet 366
Polyphase Currents 167
Polyphote Lamp 323
Popgun, Electric 282
Porous Cell 427
Porous Cup 159, 426
Porret's Phenomenon 427
Portative Power of Magnet 366
Portelectric Railroad 427
Portrait, Electric 415
Position, Energy of 241
Position Finder 427
Position, Sighted 484
Positive Current 164
Positive Direction 428
Positive Electricity 428
Positive Element 277
Positive Feeder 251
Positive Plate 277, 417
Positive Pole 425
Positive Potential 432
Positive Side of Circuit 125
Post Office 428
Posts, Binding, or Screws 81
Potential 428
Potential, Absolute 428
Potential, Constant 429
Potential Difference, Contact 147
Potential Difference, Electric 429
Potential Difference, Electro-motive 429
Potential, Electric Absolute 429
Potential, Fall of 430
Potential Galvanometer 269
Potential in Armature, Curve of Distribution of 172
Potential, Magnetic 350, 431
Potential, Negative 432
Potential or Static Energy 241
Potential, Positive 432
Potential Regulation, Constant 455
Potential, Unit of Electric 432
Potential, Zero 432, 582
Potentiometer 432
Poundal 433
Pound-foot 259
Power 438
Power, Candle 100
Power, Directive 187
Power, Electric 433
Power, Horse 290
Power, Illuminating 296
Power, Multiplying 349
Power of Magnet, Portative 366
Power of Periodic Current 433
Powers of Ten 527
Power, Stray 495
Power, Thermo-electric 533
Press Button 94
Pressel 434
Pressure 434
Pressure, Electric 434
Pressure, Electrification by 434
Primary 434
Primary Ampere-turns 31, 551
Primary Battery 69, 434
Prime 434
Prime Conductor 146, 434
Prime Conductor, Coatings of a 129
Prime Motor 385
Principle, Gauss' 276
Printing Telegraph 515
Probe, Electric 435
Projecting Power of a Magnet 435
Prony Brake 435
Proof Piece, Magnetic 350
Proof-plane 436
Proof Plane, Magnetic 350
Proof-sphere 436
Proportional Galvanometer 269
Proportionate Arms 436
Prostration, Electric 437
Protector, Body 84
Protector, Comb 437
Protector, Electric 437
Pull 437
Pulsatory Current 164
Pulsatory Field 256
Pulsating Motor 386
Pulvermacher's Electro-medical Battery 69
Pump, Geissler 437
Pump, Sprengel 439
Pump, Swinburne 440
Pumping 439
Puncture-electro 232
Puncture-galvano 232
Push Button 93. 98, 440
Push, Desk 180
Push, Floor 258
Pyro-electricity 441
Pyromagnetic Generator 442
Pyromagnetic Motor 441
Pyromagnetism 443
Pyrometer, Siemens' Electric 443
Q 443
Quad 288, 443
Quadrant 288, 443
Quadrantal Deviation 180
Quadrant, Legal 444
Quadrant, Standard 444
Quadrature 444
Quadruplex Telegraph 515
Qualitative 444
Quality of Sound 444
Quantitative 444
Quantity 444
Quantity Armature 47
Quantity, Electric 444
Quantity, Electro-magnetic 445
Quantity, Electro-magnetic, Practical Unit of 445
Quantity, Electrostatic 445
Quantity Galvanometer 269
Quantity, Magnetic 350
Quantity Meter 445
Quartz 445
Quicking 446
R 446
Racing of Motors 446
Radial Armature 47
Radian 446
Radiant Energy 446
Radiant Matter 368
Radiation 446
Radicals 446
Radiometer 447
Radiometer, Electric 447
Radio-micrometer 447
Radiophony 447
Railroad, Portelectric 427
Range Finder 447
Rate Governor 449
Rate Governor or Phonophone, Langdon Davies' 450
Rated Candle Power 101
Ratio Arms 437
Ratio, Core 154
Ratio, Shunt 483
Ratio, Velocity 560
Ray, Electric 450
Rayleigh Ohm 396
Reaction Coil 132
Reaction of a Dynamo Field and Armature 450
Reaction of Degeneration 179
Reactions, Anodic 36
Reactions, Armature 47
Reaction Telephone 527
Reaction Wheel 259
Reading Galvanometer, Direct 269
Reading, Sound 489
Reading Telescope 450
Real Efficiency of Secondary Battery 205
Real Hall Effect 284
Réaumur Scale 450
Recalescence 451
Receiver 451
Receiver, Harmonic 284, 451
Receiver, Morse 381
Receptive, Electro- 232
Recharge 115
Reciprocal 451
Reciprocating Motor 385
Recoil Circuit 125
Recorder, Chemical 117
Recorder, Morse 451
Recorder, Siphon 452
Record, Telephone 451
Rectification of Alcohol, Electric 18
Rectified Current 164
Rectilinear Current 165
Red Varnish 559
Red Magnetism 357
Redressed Current 165
Reduced Resistance 467
Reducteur for Ammeter 453
Reducteur for Voltmeter 453
Reduction of Ores, Electric 453
Reduction of Phosphorous, Electrical 410
Reflecting Galvanometer 270
Reflector, Parabolic 402
Refraction, Electric Double 454
Refraction, Electrostatic 235
Refreshing Action 454
Region, Extra-polar 454
Region, Intrapolar 307
Region, Polar 424
Register, Electric 454
Register, Telegraphic 454
Regulation, Constant Current 454
Regulation, Constant Potential 455
Regulation of Alternating Current Dynamo 195
Regulation of Dynamos 455
Reguline 456
Relative 456
Relative Calibration 98
Relay 456
Relay Bell 80
Relay Bells 457
Relay, Box Sounding 457
Relay Connection 457
Relay, Differential 457
Relay Magnet 457
Relay, Microphone 377, 457
Relay, Neutral, Armature 390
Relay, Polarized 457
Reluctance 458
Reluctance, Magnetic 351, 458
Reluctance, Unit of 438
Reluctivity 459
Reluctivity, Magnetic 351
Remanence 459
Remanence, Magnetic 358
Removal of Hair by Electrolysis 283
Renovate 115
Repeater 459
Repeater, Telegraph 518
Replenisher, Sir Wm. Thomson's 459
Repulsion, Magnetic 338
Repulsion and Attraction, Electrostatic 234
Repulsion and Attraction, Electro-magnetic 217
Reservoir, Common 460
Residual Atmosphere 460
Residual Capacity 103
Residual Charge 116
Residual Magnetism 358
Residue, Electric 116, 460
Resin 460
Resinous Electricity 461
Resistance 461
Resistance, Apparent 297, 462
Resistance, Assymmetrical 462
Resistance Box 462
Resistance, B. A. Unit of 462
Resistance Box, Sliding 463
Resistance, Breguet Unit of 463
Resistance Bridge 577
Resistance Coil 137
Resistance Coil, Standard 464
Resistance, Carbon 463
Resistance, Combined 464
Resistance, Compensating 144
Resistance, Critical 464
Resistance, Dielectric 183, 464
Resistance, Digney Unit of 464
Resistance, Electrolytic 464
Resistance, English Absolute or Foot-second Unit of 465
Resistance, Equivalent 465
Resistance, Essential 465
Resistance, External 465
Resistance Frame 465
Resistance, German Mile Unit of 466
Resistance, Hittorf's 466
Resistance, Inductive 466
Resistance, Insulation 466
Resistance, Internal 466
Resistance, Jacobi's Unit of 466
Resistance, Joint 464
Resistance, Magnetic 351, 458
Resistance, Matthiessen's Meter-gram Standard of 466
Resistance, Matthiessen's Unit of 466
Resistance, Meter-millimeter Unit of 466
Resistance, Mil-foot Unit of 467
Resistance, Non-essential 465, 467
Resistance, Non-inductive 467
Resistance of Human Body 467
Resistance, Ohmic 394, 467
Resistance, Reduced 467
Resistance, Siemens' Unit of 467
Resistance, Specific 467
Resistance. Specific Conduction 467
Resistance, Spurious 467
Resistance, Steadying 468
Resistance, Swiss Unit of 468
Resistance, Thomson's Unit of 468
Resistance to Sparking 490
Resistance, True 467
Resistance, Unit 468
Resistance, Unit of, B. A. 78
Resistance, Varley's 559
Resistance, Varley's Unit of 468
Resistance, Virtual 297
Resistance, Weber's Absolute Unit 468
Resolution of Forces 261
Resonator, Electric 468-470
Rest, Currents of 167
Resultant 470
Resultant Polarity 470
Retardation 470
Retardation of Phase 471
Retentivity 471
Retentivity, Magnetic 351
Retort Carbon 471
Return 471
Return Circuit 125
Return, Earth 203
Return Stroke 55
Reversal, Thermo-Electric 533
Reverse Current Working 581
Reverse-induced Current 163
Reverser, Current 165
Reversibility 471
Reversible Bridge 472
Reversing Key 316
Reversing Switch 501
Revivify 115
Revolving Armature, Page's 47
Rheochord 472
Rheometer 472
Rheomotor 472
Rheophore 472
Rheoscope 472
Rheoscopic Frog 262
Rheostat 472
Rheostat Arm 472
Rheostatic Machine 472
Rheostat, Wheatstone's 472
Rheotome 473
Rheotrope 473
Rhigolene 473
Rhumbs 473
Rhumkorff Coil 138, 473
Ribbon Coil 138
Ribbon Core 154
Right-handed Screw Law 324
Rigidity, Molecular 380, 473
Ring, Ampere 30
Ring Armature 48
Ring. Collecting 139
Ring Contact 473
Ring Core 155
Ring, Dynamo 200
Ring, Faraday's 473
Ring, Foundation 261
Ring, Guard 282
Ring, Pacinotti's 400
Rings, Electric 392
Rings, Nobili's 392
Ring, Split, Commutator 141
Roaring 474
Rocker 474
Rocker Arms 50, 474
Rod, Bus 94
Rod, Discharging 189
Rod, Omnibus 94
Roget's Spiral 474
Rolling Armature 49
Rosin 460
Rotary Polarization, Magnetic 351
Rotating Brush 91
Rotating Field 256
Rotation of Liquids, Electro-dynamic 474
Rotation of Liquids, Electro-magnetic 475
Rotatory Currents 167
Rubber 102, 475
Rubber, India 102
Saddle Bracket 475
Safety Catch 175
Safety Cut Out 175
Safety Device 475
Safety Fuse 175, 475
Safety Fuse, Plug, or Strip 475
Sal Ammoniac Battery 69
Salient Pole 426
Salt 475
Salt, Dronier's 192
Salt or Sea-salt Battery 69
Sand Battery 90
Saturated 476
Saturation, Magnetic 351
Saw, Electric 476
Scale, Fahrenheit 248
Scale, Réaumur 450
Scale, Tangent 502
Schweigger's Multiplier 476
Scratch Brushes 476
Screen, Electric 476
Screen, Magnetic 351
Screen, Methven 376
Screws or Posts, Binding 81
Sealed, Hermetically 289
Sea Salt or Salt Battery 69
Secohm 288
Second, Ampere- 30
Secondary Actions 477
Secondary Ampere-turns 31, 551
Secondary Battery 70
Secondary Battery, Efficiency of, Quantity 205
Secondary Battery, Planté's 72
Secondary Clock 127
Secondary Current 166
Secondary Generator 277, 477
Secondary Magnet Poles 366
Secondary, Movable 477
Secondary Plates, Colors of 478
Secondary Poles 478
Secretion Current 166
Section Trolley 549
Sectioned Coils 138
Seebeck Effect 478
Segments 56
Segments, Commutator 56
Selenium 478
Selenium Cell 478
Selenium Eye 478
Self-exciting Dynamo 201
Self-induction 303
Self-induction, Magnetic 352
Self-induction, Unit of 304
Self-repulsion 478
Self-winding Electric Clock 128
Semi-circular Deviation 181
Semi-conductors 478
Semi-incandescent Lamp 323
Sender, Zinc 582
Sensibility 479
Sensitiveness, Angle of Maximum 479
Separate Circuit Dynamo 201
Separate Touch 359, 479
Separate Touch, Magnetization by 359
Separately Excited Dynamo 201, 479
Separation of Electricities 479
Separator 479
Separator, Magnetic 352
Series 479
Series and Long Shunt Winding 579
Series and Separate Coil Winding 579
Series and Short Shunt Winding 580
Series, Contact 147
Series Dynamo 201
Series, Electro-chemical 209
Series, Electro motive 228
Series, Electrostatic 235
Series Motor 386
Series, Multiple- 387
Series-multiple 480
Series, Thermo-electric 534
Series Transformer 548
Series Winding 579
Service Conductors 480
Serving 480
Shackle 480
Shadow, Electric 480
Shadow, Molecular 480
Shadow Photometer 414
Sheath for Magnet Coils 481
Sheath for Transformers 481
Sheath, Induction 303
Sheet Current 166
Shell, Magnetic 352
Shell, Strength of Magnetic 352
Shellac 481
Shellac Varnish 481
Shield, Anti-magnetic 37
Shield, Magnetic 351, 353
Shielded 481
S. H. M. 482
Shock, Back, or Stroke of Lightning 55
Shock, Break 482
Shock, Electric 482
Shock, Opening 482
Shock, Static 482
Short Circuit 482
Short Circuit Working 482
Short Fall Air Pumps 16
Short Shunt Winding 579
Shovel Electrodes 483
Shower Bath, Electric 57
Shunt 483
Shunt Box 483
Shunt Circuit 123, 126
Shunt Dynamo 202
Shunt, Electro-magnetic 483
Shunt, Galvanometer 271, 483
Shunt, Magnetic 353
Shunt Motor 386
Shunt. Multiplying Power of a 388
Shunt Ratio 483
Shunt Winding 580
Shuttle Armature 49
Shuttle Current 483
Shuttle Winding 483, 580
Side Flash 484
Siemens and Halske's Battery 72
Siemens' Differential Voltameter 564
Siemens' Electro-dynamometer 212
Siemens' Old Armature 49
Siemens' Unit of Resistance 467
Sighted Position 484
Signaling, Velocity of 560
Signals, Electro-pneumatic 231
Signal, Telegraph 519
Silent Discharge 187, 189, 206
Silver 484
Silver Bath 484
Silver, German 277
Silver Stripping Bath 484
Silver Voltameter 565
Simple Arc 39
Simple Circuit 126
Simple Harmonic Motion 486
Simple Immersion 185
Simple Magnet 366
Simple Substitution 485
Sims-Edison Torpedo 543
Sine Curve 174, 485
Sine Galvanometer 271
Sine Law 486
Sines, Curve of 173, 485
Single Coil Dynamo 202
Single Curb Working 581
Single Fluid Theory 486
Single Fluid Voltaic Cell 486
Single Needle Telegraph 519
Single Touch, Magnetization by 359
Sinistrotorsal 486
Sinuous Current 166
Sinusoidal Curve 174, 485
Siphon Recorder 452
Sir William Thomson's Battery 72
Skin Effect 486
Skrivanow Battery 72
Sled 486
Sleeve, Joint 310
Slide, Balance 374
Slide Bridge 374
Slide Meter Bridge 486
Sliding Condenser 144
Sliding-contact Key 316
Sliding Resistance Box 463
Slope, Lines of 330
Smee's Battery 73
S. N. Code 486
Snap Switch 501
Soaking-in-and-out 486
Socket, Lamp 323
Socket, Wall 572
Soldering, Electric 487
Solenoid 487
Solenoid Ammeter 28
Solenoidal Distribution of Magnetism 358
Solenoidal Magnet 366
Solid Earth 203
Solutions, Battery, Chromic Acid 73
Solution, Chutaux's 119
Solution, Delaurier's 179
Solution, Hittorf's 289
Solution, Kookogey's 318
Solution, Poggendorf's 421
Solution, Striking 496
Solution, Tissandier's 542
Solution, Trouvé's 549
Sonometer, Hughes' 488
Sonorescence 488
Sound, Characteristics of 114
Sounder 488
Sounders, Tin 542
Sound, Quality of 444
Sound Reading 489
South Magnetic Fluid 356
Space, Clearance 489
Space, Crookes' Dark 489
Space, Dark, Faraday's 249, 489
Space, Faraday's Dark 249, 489
Space, Inter-air 489
Space, Interferric 489
Span, Polar 424
Span, Polar, Angle of the 32
Spark Arrester 489
Spark Coil 489
Spark Discharge 189
Spark, Duration of Electric 490
Spark Gap 490
Spark, Length of 490
Spark Micrometer 470
Spark Tube 491
Sparking 490
Sparking Distance 190
Sparking, Lines or Points of Least 490
Sparking, Resistance to 490
Specific Conduction Resistance 467
Specific Conductivity 145
Specific Heat 286
Specific Heat of Electricity 491
Specific Inductive Capacity 103
Specific Magnetization 361
Specific Resistance 467
Speech, Articulate 50
Speed, Critical 157
Spent Acid 491
Spent Liquor 491
Spherical Armature 49
Spherical Candle Power 101
Spherical Illuminating Power 296
Sphygmophone 491
Sphygmophone, Electric 491
Spiders 491
Spiral 492
Spiral Battery 73
Spiral, Roget's 474
Spiral Winding 492
Spirit Compass 143
Splayed Joint 311
Splice Box 492
Split Battery 73
Split Ring Commutator 141
Spluttering 492
Sponge, Platinum 419
Spot, Grease 92
Sprengel Pump 439
Spring Ammeter 28
Spring and Fibre Suspension 252
Spring-contact 148
Spring Control 492
Spring Jack Cut-out 493
Spurious Hall Effect 284
Spurious Resistance 467
Spurious Voltage 493
Square Mil 379
Square Wire 493
Squares, Law of Inverse 323
St. Elmo's Fire 494
Staggering 493
Standard Candle 101
Standard Candle, German 99
Standard, Harcourt's Pentane 406
Standard, Methven 376
Standard of Illuminating Power, Viole's 561
Standard or Main Feeder 251
Standard Quadrant 444
Standard Resistance Coil 464
Standard Voltaic Cell 109
Standard Voltaic Cell, Daniell's 109
Standard Voltaic Cell, Latimer Clark's. 110
State, Electrotonic 493
State, Nascent 389
State of Matter, Fourth 261
State, Passive 404
State, Permanent 408
Static Breeze 493
Static Condenser, Armature of 46
Static Electricity 493
Static Hysteresis 295
Static Induction, Magnetic 347
Static Shock 482
Station, Central 493
Station, Distant 493
Station, Home 493
Station, Transforming 494
Steadying Resistance 468
Steel 494
Steeling 494
Steel Yard Ammeter 28
Step-by-step Telegraph 506
Step-by-step Telegraphy 494
Step-down 494
Step, Foot- 259
Sticking 494
Stool, Insulating 305
Stopped Coil Electro-magnets 221
Stopping Off 495
Storage Battery 70
Storage Battery Changing Switch 501
Storage Battery, Planté's 72
Storage Capacity 105, 495
Storage of Electricity 495
Storms, Electric 495
Storms. Magnetic 353
Strain 495
Strain, Dielectric 183
Strain, Magnetic 354
Stranded Conductor Armature 49
Stranded Core 155
Stray Field 256, 495
Stray Power 495
Streamlets. Current 495
Strength, Dielectric 183
Strength of Magnetic Shell 352
Stress 495
Stress, Dielectric 496
Stress, Electro-magnetic 219, 496
Stress, Electrostatic 236, 496
Stress, Energy of 241
Stress, Magnetic 354
Striae, Electric 496
Striking Distance 496
Striking Solution 496
Stripping 496
Stripping Bath 57
Stripping Bath, Gold 279
Stripping Bath, Silver 484
Stroke, Back 55
Stroke or Shock of Lightning, Back 55
Stroke, Return 55
Sub-branch 496
Sub-main 496
Sub-permanent Magnetism 358
Substitution, Simple 485
Subway, Electric 496
Successive Temperatures, Law of 324
Sucking Coil 182
Sucking Magnet 366
Sulphate of Lead Battery 66
Sulphate of Mercury Battery 67
Sulphating 497
Sulphur Dioxide 497
Sulphuric Acid 497
Sulphuric Acid Voltameter 564
Sulphurous Acid Gas 497
Sunstroke, Electric 497
Superficial Density, Electric 180
Supersaturated, 497
Supply, Isolated 309
Surface 497
Surface Density 498
Surface, Equipotential 498
Surface Leakage 498
Surface Magnetization 356
Surgical Electro-magnet 222
Surging Discharge 188
Surveyors' Compass 143
Susceptibility, Magnetic 354, 359
Suspension 498
Suspension, Bifilar 498
Suspension, Fibre 252
Suspension, Knife Edge 317
Suspension, Pivot 416
Suspension, Spring and Fibre 252
Suspension, Torsion 545
Suspension Wire of Cable 97
Swaging. Electric 499
Swelling Current 167
S. W. G. 499
Swinburne Pump 440
Swinging Earth 203
Swinging or Pendulum Annunciator 35
Swiss Unit of Resistance 468
Switch 499
Switch, Automatic 500
Switch Board 500
Switch Board, Multiple 387
Switch Board, Trunking 550
Switch, Break-down 88
Switch, Changing 500
Switch, Changing Over 500
Switch, Circuit Changing 500
Switch, Double Break 500
Switch, Double Pole 500
Switch Feeder 500
Switch, Knife 501
Switch, Knife Break 501
Switch, Knife Edge 501
Switch, Multiple 501
Switch, Plug 420
Switch, Pole Changing 501
Switch, Reversing 501
Switch, Snap 501
Switch, Storage Battery Changing 501
Switch, Three Way 501
Switches, Distributing 190
Symmer's Theory 191
Sympathetic Vibration 501, 561
System, Block 83
System of Co-ordinates 150
System, Tower 545
T 501
Tailing Current 501
Tailings 501
Talk, Cross 158
Tamidine 502
Tangent Galvanometer 272
Tangent Law 502
Tangent Positions of, Gauss 276
Tangent Scale 502
Tangentially Laminated Core 155
Tank, Cable 97
Tape, Insulating 305
Tapper Key, Double 314
Teazer 504
Technica, Memoria, Ampére's 30
Tee, Lead 504
Teeth, Pacinotti 400
Tel-autograph 504
Tele-barometer, Electric 504
Telegraph, A. B. C. 504
Telegraph, Autographic 510
Telegraph, Automatic 504
Telegraph, Dial 505
Telegraph, Double Needle 506
Telegraph, Duplex 506
Telegraph, Duplex, Bridge 506
Telegraph, Duplex, Differential 507
Telegraph Embosser 237
Telegraph, Facsimile 510
Telegraph, Harmonic Multiplex 510
Telegraph. Hughes' 511
Telegraph Insulator 306
Telegraph Key 316
Telegraph, Magneto-electric 512
Telegraph, Morse 512
Telegraph, Multiplex 514
Telegraph, Single Needle 519
Telegraph, Overhouse 515
Telegraph Pole Brackets 515
Telegraph, Printing 515
Telegraph, Quadruplex 515
Telegraph Repeater 518
Telegraph Signal 519
Telegraph, Step-by-step 506
Telegraph, Wheatstone's, A. B. C. 521
Telegraph. Writing 521
Telegraphic Alphabet 19
Telegraphic Code 130, 511
Telegraphic Needle 389
Telegraphic Register 454
Telegraphy, Multiplex 388
Telegraphy, Step-by-step 494
Telemanometer, Electric 521
Telemeter, Electric 521
Telepherage 522
Telephone 522
Telephone, Bi- 524
Telephone, Capillary 525
Telephone, Carbon 525
Telephone, Chemical 526
Telephone, Electrostatic 526
Telephone Exchange 246
Telephone Induction Coil 137, 526
Telephone, Reaction 527
Telephone Record 451
Telephone, Thermo-electric 527
Telephone Tinnitus 542
Telephotography 521
Telephote 527
Telescope, Reading 450
Teleseme 527
Tele-thermometer 527
Terminal 529
Terminal Pole 529
Terminal Voltage 562
Temperature, Absolute 8
Temperature, Neutral 390
Temperatures, Laws of Successive 324
Tempering, Electric 527
Temporary Magnetism or Magnetization 357
Ten, Powers of 527
Tension 529
Tension, Disruptive 189
Tension, Electric 529
Terrestrial Magnetism 358
Tetanus, Acoustic 529
Tetrode Working 581
Theatrophone 529
Theory, Contact 148
Theory, Double Fluid 191
Theory, Franklin's 262
Theory of Dimensions 184
Theory of Light, Electro-magnetic 219
Theory of Light, Maxwell's 369
Theory of Magnetism, Ampére's 354
Theory of Magnetism, Ewing's 356
Theory of Magnetism, Hughes' 357
Theory of Magnetism, Weber's 358
Theory, Symmer's 191
Therapeutic Electrode 210
Therapeutics, Electro- 236
Therm 529
Thermaesthesiometer 530

Thermal Electric Meter 375
Thermal Equivalent, Electro- 245
Thermal Energy 242
Thermic Balance 85
Thermo Call 530
Thermo-chemical Battery 530
Thermo-chemical Equivalent 245
Thermo-electric Battery or Pile 530
Thermo-electric Call 531
Thermo-electric Couple 532
Thermo-electric Current 167
Thermo-electric Diagram 532
Thermo-electric Element 237
Thermo-electric Inversion 533
Thermo-electric Junction 533
Thermo-electric Neutral Point 390
Thermo-electric Pile, Differential 533
Thermo-electric Power 533
Thermo-electric Reversal 533
Thermo-electric Series 534
Thermo-electric Telephone 527
Thermo-electric Thermometer 535
Thermo-electricity 533
Thermo-electricity, Laws of, Becquerel's 78
Thermo-electricity, Volta's Law of 568
Thermo-electrometer 536
Thermolysis 535
Thermo-multiplier 536
Thermometer 535
Thermometer, Electric 535
Thermometer, Kinnersley's 536
Thermometer, Tele- 527
Thermometer, Thermo-electric 535
Thermophone 537
Thermostat, Electric 537
Third Brush 91
Thomson Effect 538
Thomson's Replenisher, Sir William 459
Thomson's Battery, Sir William 72
Thomson's Unit of Resistance 468
Three Filament Incandescent Lamp 322
Three Way Switch 501
Three Wire System 539
Throw 237, 540
Throw-back Indicator 540
Thrust Bearings 540
Thunder 540
Ticker 540
Tick, Magnetic 354
Timbre 444
Time Constant 541
Time Cut-outs 541
Time Electric Meter 375
Time-fall 541
Time-reaction 541
Time-rise 541
Tin 541
Tin Sounders 542
Tinnitus, Telephone 542
Tips, Polar 423
Tips, Pole 290, 426
Tissandier's Solution 542
Toeppler-Holtz Machine 334
Tongs, Cable Hanger 97
Tongs, Discharging 189
Tongue of Polarized Relay 542
Tongue of Polarized Relay, Bias of 542
Toothed Core-discs 154
Top, Magnetic 542
Torpedo, Electric 543
Torpedo, Sims-Edison 543
Torque 543
Torque, Curve of 174
Torricellian Vacuum 557
Torsion Balance, Coulomb's 544
Torsion Galvanometer 273, 544
Torsion Head 544
Torsion Suspension 545
Total Earth 203
Touch 545
Touch, Separate 479
Tourmaline 545
Tower, Electric 545
Tower System 545
Trailing Horns 259
Transformer 545
Transformer, Commuting 547
Transformer, Continuous Alternating 547
Transformer, Continuous Current 384, 547
Transformer, Core 547
Transformer, Faraday's 250
Transformer, Hedgehog 548
Transformer, Multiple 548
Transformer, Oil 548
Transformer, Pilot 415
Transformer, Series 548
Transformer. Sheath for 481
Transforming Station 494
Transformer, Welding 548, 575
Translator 519
Translucent Disc Photometer 412
Transmitter 548
Transmitter, Carbon 549
Transmission of Energy, Electric 240
Transposing 549
Transverse Electro-motive Force 549
Trap, Bug 92
Traveling Pole 426
Trembling Bell 78
Trolley 549
Trolley, Double 549
Trolley Section 549
Trough Battery 73
Trouvé's Blotting Paper Battery 73
Trouvé's Solution 549
True Contact Force 549
True Ohm 396
True Resistance 467
Trimmer, Brush 549
Trumpet, Electric 550
Trunk Lines 550
Trunking Switch Board 550
Tube, Electric 550
Tube, Guard 282
Tube, Luminous 550
Tube of Magnetic Induction 347
Tube, Spark 491
Tube, Stratification 495
Tubes, Geissler 276
Tubes of Force 261
Tubes, Plücker 420
Tubular Braid 550
Tubular Core 155
Tubular Magnet 356
Tuning Fork Circuit Breaker 121
Tuning Fork Dynamo 202
Tuning Fork, Interrupter for 307
Turning Moment 544
Turns 550
Turns, Ampere- 31
Turns, Dead, of a Dynamo 551
Turns, Primary Ampere- 551
Turns, Secondary Ampere- 551
Twist Joint, American 309
Twist, Magnetic 354
Tyer's Battery 74
Typewriter, Electric 551
Type Printer, Hughes' 511
Ultra-gaseous Matter 551
Unbuilding 552
Underground Conductor 552
Underground Electric Subway 552
Undulatory 23
Undulatory Current 167
Unidirectional 553
Uniform Field 256
Uniform Field of Force 553
Uniform Magnetic Field 345
Unipolar 553
Unipolar Armature 50, 553
Unipolar Current Induction 553
Unipolar Dynamo 202-553
Unipolar Electric Bath 57
Unipolar Induction 304
Unipolar Magnet 366
Unit 553
Unit, Absolute 554
Unit Angle 554
Unit. B. A. 554
Unit, B. A., of Resistance 462
Unit Current 167
Unit Electro-motive Force 228
Unit, Fundamental 554
Unit Jar 554
Unit Magnet Pole 366
Unit of Capacity 105
Unit of Conductivity 145
Unit of Electric Potential 432
Unit of Energy, Electro-magnetic 220
Unit of Force 261
Unit of Illumination 296
Unit of Output 399
Unit of Reluctance 458
Unit of Resistance, B. A. 78
Unit of Resistance, Breguet 463
Unit of Resistance, Digney 464
U nit of Resistance, English Absolute or Foot-second 465
Unit of Resistance, German Mile 466
Unit of Resistance, Jacobi's 466
Unit of Resistance, Meter-millimeter. 466
Unit of Resistance, Mil-foot 467
Unit of Resistance, Siemens' 467
Unit of Resistance, Swiss 468
Unit of Resistance, Thomson's 468
Unit of Resistance, Varley's 468
Unit of Self-induction 304
Unit of Supply 554
Unit of Work 581
Unit Resistance 468
Units, Circular 126, 555
Units, Derived 555
Units, Heat 288
Units, Practical 555
Universal Battery System 556
Universal Discharger 189
Unmarked End 556
Upright Galvanometer 274
Upward's Battery 75
V 556
V. A. 557
Vacuum 557
Vacuum, Absolute 557
Vacuum, High 557
Vacuum Lightning Arrester 329
Vacuum, Low 557
Vacuum, Partial 557
Vacuum, Torricellian 557
Valency 557
Valve, Electrically Controlled 558
Vapor Globe 558
Variable Conductivity 145
Variable Period 558
Variable State 558
Variation of the Compass 32, 558
Variations, Magnetic 354
Variometer 559
Varley's Battery 76
Varley's Condenser 559
Varley's Resistance 559
Varley's Unit of Resistance 468
Varnish 559
Varnish, Electric 559
Varnish, Insulating 306
Varnish, Red 559
Varnish, Shellac 481
Vat 559
Velocity 559
Velocity, Angular 32, 559
Velocity of Signaling 560
Velocity Ratio 560
Ventilation of Armature 560
Vertical Galvanometer 274
Vertical Induction 304
Verticity, Poles of 426, 560
Vibrating Bell 78
Vibration Period 560
Vibration, Sympathetic 501, 561
Vibrator, Electro-magnetic 561
Villari's Critical Value 561
Viole 562
Viole's Standard of Illuminating Power 561
Virtual Resistance 297
Viscous Hysteresis 295, 356
Vis Viva 562
Vitreous Electricity 562
Vitriol, Blue 562
Vitriol, Green 562
Vitriol, White 562
Volatilization of Carbon 108
Volt 562
Volt-ampere 573
Volt and Ampere Meter Galvanometer 274
Volt, B. A. 568
Volt, Congress 568
Volt, Coulomb 568, 573
Volt Indicator 568
Volt. Legal 568
Voltage 562
Voltage, Spurious 493
Voltage, Terminal 562
Voltaic 563
Voltaic Alternatives 563
Voltaic Arc 39
Voltaic Cell, Daniell's Standard 109
Voltaic Cell, Double Fluid 191
Voltaic Cell, Capacity of Polarization of a 103
Voltaic Cell, Single Fluid 486
Voltaic Cell, Standard 109
Voltaic Cell, Standard, Latimer Clark's 110
Voltaic Circuit 126
Voltaic Effect 563
Voltaic Electricity 563
Voltaic Element 237
Voltaic or Galvanic Battery 76
Voltaic or Galvanic Circle 119
Voltaic or Galvanic Couple 156
Voltameter 563
Voltameter, Copper 563
Voltameter, Differential, Siemens' 564
Voltameter, Faraday's 250
Voltameter, Gas 564
Voltameter, Silver 565
Voltameter, Sulphuric Acid 564
Voltameter, Volume 564
Voltameter, Weight 566
Voltametric Law 567
Volta's Battery 76
Volta's Fundamental Experiments 567
Volta's Law of Galvanic Action 568
Volta's Law of Thermo-electricity 568
Voltmeter 568
Voltmeter, Battery 569
Voltmeter, Cardew 569
Voltmeter, Electrostatic 571
Voltmeter, Reducteur for 453
Volts, Lost 571
Volume Voltameter 564
Vulcanite 571
W 572
Wall Bracket 572
Wall Socket 572
Ward 572
Waste Field 256
Water 572
Water Battery 77
Water Equivalent 572
Water Level Alarm 18
Waterproof Lamp Globe 572
Wattless Current 168
Watt 572
Watt-hour 573
Watt Meter 375
Watt-minute 573
Watt-second 573
Watts, Apparent 573
Wave Winding 580
Waves, Amplitude of 31
Waves. Electro-magnetic 573
Wax, Paraffine 402
Weber 574
Weber s Absolute Unit Resistance 468
Weber-meter 574
Weber's Theory of Magnetism 358
Wedge Cut-out 175
Wedge. Double 191
Weight, Atomic 53
Weight, Breaking 89
Weight Electrometer 223
Weight Voltameter 566
Welding, Electric 574
Welding Transformer 548, 575
Wheatstone's A. B. C. Telegraph 521
Wheatstone's Balance 577
Wheatstone's Bridge 575
Wheatstone's Bridge, Commercial 86
Wheatstone's Rheostat 472
Wheel, Phonic 409
Wheel, Reaction 259
Whirl, Electric 577
White Vitriol 562
Wilde Candle 101
Wimshurst Electric Machine 335, 577
Wimshurst Machine 335, 577
Wind, Electric 578
Windage 578
Windings, Ampere 31
Winding, Bifilar 81
Winding, Compound 578
Winding, Disc 579
Winding, Lap 579
Winding, Long Shunt 579
Winding, Long Shunt and Series 579
Winding, Multiple 579
Winding, Multipolar 579
Winding, Series 579
Winding, Series and Separate Coil 579
Winding, Series and Short Shunt 580
Winding, Short Shunt 579
Winding, Shunt 483, 580
Winding Shuttle 580
Winding, Wave 580
Winding Working, Differential 183
Wire, Block 83
Wire, Bus 94
Wire, Dead 177
Wire Finder 580
Wire Gauze Brush 92
Wire, Idle 296
Wire, Neutral 390
Wire, Omnibus 94
Wire, Square 493
Wire System, Three 539
Wires, Crossing 158
Wires, Leading-in 324
Wires, Phantom 409
Wires, Pilot 415
Wollaston Battery 78
Work 580
Work, Electric, Unit of 580
Work, Unit of 581
Working, Contraplex 580
Working, Diode 580
Working, Diplex 580
Working, Double Curb 581
Working, Hexode 581
Working, Pentode 581
Working, Reverse Current 581
Working, Single Curb 581
Working Tetrode 581
Writing Telegraph 521
X, Axis of 54
Y, Axis of 54, 397
Yoke 581
Zamboni's Dry Pile 581
Zero 581
Zero, Absolute 581
Zero Potential 432, 582
Zero, Thermometric 582
Zinc 582
Zinc Sender 582
Zincode 582
Zone, Peripolar 582
Zone, Polar 582