B. W. G.—Birmingham wire gauge.
Candle-Power.—Term used to denote the amount of light as compared with a standard sperm candle, which is a spermaceti candle, burning at the rate of 2 grains per minute.
Carbons.—The electrodes of arc lamps; the negative plate of a battery.
Carcel Lamp.—The French standard, equal to 9·4 candles.
Capacity (K).—The powder of a surface to hold electricity as “static charge.” A coulomb divided by a volt. Its Unit is the Farad.
Cathode.—The negative pole of a battery; the wire or plate connected with the zinc or positive element of the battery. The object on which a metallic deposit is to be formed. (v. Anode).
Centimetre.—The hundredth part of a metre.
Cell.—Each separate vessel in which a chemical action occurs, by which electricity is capable of being developed.
Central-station.—A building containing plant for supplying electricity to the public.
C. G. S.—The centimetre-gramme-second system.