W
Watt. The practical unit of electrical activity; the rate of work or rate of energy. It is a unit of energy or of work represented by a current of one ampere urged on by one volt of electro-motive force.
The volt-ampere.
The standard of electrical energy corresponding to horse-power in mechanics.
Watt-hour. A unit of electric energy or work; one watt exerted or expended through one hour.
Waves, Electro-magnetic. Ether waves caused by electro-magnetic disturbances affecting the luminiferous ether.
Welding, Electric. Welding by the use of the electric current.
Wimshurst Electric Machine. An influence machine for producing high potential or static electricity. Thin disks of glass are mounted on insulated bearings and revolved by power. Brushes collect the frictional electricity, which is discharged into a Leyden-jar or other form of accumulator. It is of no practical use excepting in electro-therapeutics.
Wire, Flexible. A cord of fine wire strands laid together and insulated so that it may be easily bent or wrapped.
Wiring. Installing wires so as to form a circuit for the conveyance of current for light, heat, and power.