Electricity for Boys

by James Slough Zerbe

• Pole piece, [40], [42].
• Pole, south, [20], [21], [22], [25], [50], [54], [156].
• Poles, [177], [179].
• Polonium, [186].
• Porcelain, [86].
• Porous, [85].
• Positive, [4], [21], [25], [36], [40], [68], [83], [86], [87], [94], [123], [125], [151], [152], [153], [155], [165].
• Post, binding, [52], [71].
• Potentiality, [105], [109].
• Power, [38], [186].
• Power, candle, [89], [139].
• Precipitate of lead, [83], [85].
• Precision, [7].
• Pressure, [87].
• Primary, [35], [62], [98], [134], [142], [159], [184].
• Primary battery, [7], [99].
• Primary circuit, [99].
• Primary coil, [106], [109].
• Prime conductor, [6].
• Projected, [185].
• Propagated, [105], [185].
• Properties, [55].
• Purification, [123], [128].
• Purifier, [126], [131].
• Push button, [65], [68], [69], [70], [76], [79].

• Quantity, [55], [60], [61], [138].
• Quartz, [186].

• Radio-activity, [186].
• Radium, [184], [185], [187], [188].
• Ratchet drill, [13].
• Reaction, [148].
• Receiver, [12], [90], [97], [121], [122].
• Receiving station, [109].
• Rectangular, [69].
• Rectifiers, [146].
• Red lead, [83], [84].
• Reel, [13].
• Reflected, [185].
• Refraction, [185].
• Refractory, [182].
• Register, [57].
• Removable, [54].
• Removable cap, [73].
• Repel, [20].
• Repulsion, [21], [128].
• Reservoir, [61], [62].
• Resiliency, [99].
• Resistance, [7], [36], [37], [60], [63], [99], [135], [136], [137], [138], [140], [141], [156], [157], [163], [166], [168].
• Resistance bridge, [7].
• Resistance, external, [37].
• Resistance, internal, [37].
• Rheostat, [7].
• Reversed, [20], [50], [153].

[p. 218]

Reversible, [163]. Reversing, [176]. Reversing switch, [67]. Revolubly, [46]. Revolve, [179]. Revolving, [177]. Roentgen rays, [184]. Roentgen tube, [187]. Rotation, [149]. Rubber, [40], [46], [77], [115], [126], [130], [138]. S Sad-irons, [13]. Saline, [133]. Sanitation, [12]. Saturated, [85]. Screw, [15]. Screw, binding, [65], [66]. Screw-driver, [14]. Screw, set, [72]. Sealing wax, [53]. Secondary, [62], [98], [105], [158], [159], [160]. Secondary circuit, [99]. Secondary coil, [107], [108]. Self-induction, [149], [156]. Sender, [90], [97]. Sending apparatus, [106]. Sending key, [90]. Separately excited, [46].

Series-wound, [47]. Severed magnet, [20]. Sewage, [12]. Shaft, [30]. Shears, [14], [17]. Shellac, [40]. Shunt-wound, [47]. Signal, [118]. Silver, [19], [63], [125]. Silver nitrate, [62]. Socket, [54], [139]. Soldering, [14]. Soldering iron, [17]. Solution, [55], [57], [62], [63], [84], [86], [133], [134], [142]. Sounder, [90], [92], [95], [96]. Sounding board, [119]. Source, charging, [83]. South pole, [20], [21], [22], [25], [50], [54], [156]. Spark gap, [102], [106]. Spark jump, [99]. Spring finger, [69]. Square, [14], [17]. Standard, [62], [63]. Station, [94], [95], [117], [122]. Steel, [18], [19]. Steel magnet, [53]. Sterilized, [12]. Stirrup, [75]. Stock bit, [13].

• Reversible, [163].
• Reversing, [176].
• Reversing switch, [67].
• Revolubly, [46].
• Revolve, [179].
• Revolving, [177].
• Roentgen rays, [184].
• Roentgen tube, [187].
• Rotation, [149].
• Rubber, [40], [46], [77], [115], [126], [130], [138].

• Sad-irons, [13].
• Saline, [133].
• Sanitation, [12].
• Saturated, [85].
• Screw, [15].
• Screw, binding, [65], [66].
• Screw-driver, [14].
• Screw, set, [72].
• Sealing wax, [53].
• Secondary, [62], [98], [105], [158], [159], [160].
• Secondary circuit, [99].
• Secondary coil, [107], [108].
• Self-induction, [149], [156].
• Sender, [90], [97].
• Sending apparatus, [106].
• Sending key, [90].
• Separately excited, [46].

• Series-wound, [47].
• Severed magnet, [20].
• Sewage, [12].
• Shaft, [30].
• Shears, [14], [17].
• Shellac, [40].
• Shunt-wound, [47].
• Signal, [118].
• Silver, [19], [63], [125].
• Silver nitrate, [62].
• Socket, [54], [139].
• Soldering, [14].
• Soldering iron, [17].
• Solution, [55], [57], [62], [63], [84], [86], [133], [134], [142].
• Sounder, [90], [92], [95], [96].
• Sounding board, [119].
• Source, charging, [83].
• South pole, [20], [21], [22], [25], [50], [54], [156].
• Spark gap, [102], [106].
• Spark jump, [99].
• Spring finger, [69].
• Square, [14], [17].
• Standard, [62], [63].
• Station, [94], [95], [117], [122].
• Steel, [18], [19].
• Steel magnet, [53].
• Sterilized, [12].
• Stirrup, [75].
• Stock bit, [13].

[p. 219]

Stock contact, [121]. Storage, [82]. Storage battery, [107]. Storing, [82]. Substances, [135]. Sulphate, [55], [128], [133]. Sulphur, [19]. Sulphuric acid, [31], [84]. Sulphuric acid voltameter, [55], [57]. Superstition, [171], [173]. Surging, [153], [154]. Swinging magnet, [53]. Swinging switch blade, [67]. Switch blades, [66]. Switches, [65], [66], [70], [77], [78], [90], [117]. Switches, bar, [65], [68], [90], [91]. Switches, bar, parallel, [67]. Switches, heart-shaped, [78]. Switches, piece, [77]. Switches, reversing, [67]. Switches, sliding, [67], [80]. Switches, terminal, [8]. Switches, two-pole, [65]. System, circuiting, [79]. T Tail-piece, [16]. Tantalum, [169]. Telegraph, [11], [90], [96].

Telegraph key, [106]. Telegraph sounder, [108], [109]. Telegraphing, [94]. Telephone, [12], [110], [113], [117], [118], [119], [120]. Telephone circuit, [118]. Telephone connections, [116]. Telephone hook, [122]. Temperature, [56], [88], [134], [161], [170]. Tension, high, [38], [102], [184]. Tension, low, [38], [98], [102], [179]. Terminal, [31], [34], [35], [40], [48], [82], [86], [93], [95], [107], [116], [121], [122], [151], [152], [153], [154], [156]. Terminal knob, [31]. Terminal, secondary, [102]. Terminal switch, [81]. Theoretical, [160]. Therapeutics, [187]. Thermo-electric couples, [146]. Thermo-electricity, [135]. Thermometer, [56]. Thorium, [169], [186]. Thunderbolt, [171], [173]. Tin, [136]. Tinfoil, [31], [101]. Tools, [11], [13], [17]. Torch, brazing, [17]. Transformer, [145], [146], [158], [159], [180], [182].