Gilbert:—The unit for measuring magneto-motive force, being produced by .7958 ampere-turn approximately.
Henry:—From Joseph Henry, of the Smithsonian Institution, Washington, D. C. The practical unit for measuring the induction in a circuit when the electro-motive force induced is one international volt, while the inducing current varies at the rate of one ampere per second.
Joule:—The C. G. S. unit of practical energy, being equivalent to the work done in keeping up for one second a current of one ampere against a resistance of one ohm. Named from J. P. Joule, of England.
Oersted:—From Oersted, the electrician. It is the practical unit for measuring electrical reluctance.
Watt:—The practical electrical unit of the rate of working in a circuit, when the electro-motive force is one volt, and the intensity of current is one ampere. It is equal to 107 ergs per second, or .00134 horse-power per second. Named from James Watt, of Scotland.
Weber:—The practical unit for measuring magnetic flux. Named from W. Weber, of Germany.