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A sort of electroscope, invented by Rousseau, in which the dry pile is employed to measure the amount of electricity transmitted by different bodies, or to determine their conducting power. Nichol.

enting a very small quantity of electricity, so as to render it manifest by sparks or the electroscope.

he use of a liquid, affording a feeble current, and chiefly useful in the construction of electroscopes of great delicacy; -- called also Zamboni's , from the names of the two earliest constructors of it. -- Dry pipe (Steam Engine), a pipe which conducts dry steam from a boiler. -- Dry plate (Photog.), a glass plate…

powerful shocks; -- called also sheathfish. -- Electric clock. See under Clock, and see Electro-chronograph. -- Electric current, a current or stream of electricity traversing a closed circuit formed of conducting substances, or passing by means of conductors from one body to another which is in a different electric…

An abbreviation for electro-motive force.

standard unit of electrical capacity; the capacity of a condenser whose charge, having an electro-motive force of one volt, is equal to the amount of electricity which, with the same electromotive force, passes through one ohm in one second; the capacity, which, charged with one coulomb, gives an electro-motive force o…

The art or process of depositing metals by electricity; electrotypy.

Of or pertaining to the art or process of electrotyping; employing, or produced by, the process of electolytic deposition; as, a galvano-plastic copy of a medal or the like.

The art or process of electrotypy.

Same as Electro-puncture.

Same as Electrotonus.

A glass tube provided with platinum electrodes, and containing some gas under very low tension, which becomes luminous when an electrical discharge is passed through it; -- so called from the name of a noted maker in germany. It is called also Plücker tube, from the German physicist who devised it.

ise the temperature of one gram of pure water one degree centigrade. -- Gram equivalent (Electrolysis), that quantity of the metal which will replace one gram of hydrogen.

An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine.

roken by the movement of an automatically vibrating hammer between a contact piece and an electromagnet, or of a rapidly moving piece mechanically driven.

The unit of electric induction; the induction in a circuit when the electro-motive force induced in this circuit is one volt, while the inducing current varies at the rate of one ampère a second.

A highly exhausted glass tube with metallic electrodes nearly in contact so as to exhibit the insulating effects of a vacuum. It was used by the German physicist W. Hittorf (b. 1824).

nt, analogous to the actual electrical resistance to a direct current, being the ratio of electromotive force to the current. It is equal to R2 + X2, where R = ohmic resistance, X = reactance. For an inductive circuit, X = 2pfL, where f = frequency and L = self-inductance; for a circuit with capacity X = 1 ÷ 2pfC, wher…

Rendered electro-polar by induction, or brought into the opposite electrical state by the influence of inductive bodies.

lectrical or magnetic force or condition from one body on another without actual contact. Electro-dynamic induction, the action by which a variable or interrupted current of electricity excites another current in a neighboring conductor forming a closed circuit. -- Electro-magnetic induction, the influence by which an…