Search the Dictionary

g to, or produced by, magnetism which is developed by the passage of an electric current. Electro-magnetic engine, an engine in which the motive force is electro-magnetism. -- Electro-magnetic theory of light (Physics), a theory of light which makes it consist in the rapid alternation of transient electric currents mo…

1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the i…

record of the time at which any observed phenomenon occurs, or of its duration. It has an electro-magnetic register connected with a clock. See Chronograph.

s or machine for producing motion and mechanical effects by the action of electricity; an electro-magnetic engine.

ctricity excites another current in a neighboring conductor forming a closed circuit. -- Electro-magnetic induction, the influence by which an electric current produces magnetic polarity in certain bodies near or around which it passes. -- Electro-static induction, the action by which a body possessing a charge of st…

ng a great quantity of electricity of low tension, and hence adapted to the exhibition of electro-magnetic phenomena. [R.]

it is a resistance substantially equal to 109 units of resistance of the C.G.S. system of electro-magnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice 14.4521 grams in mass, of a constant cross-sectional area, and of the l…

or dull metal with a thin plate of precious or bright metal, as by mechanical means or by electro-magnetic deposition.