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An apparatus for recording or indicating alternating-current wave forms or other electrical oscillations, usually consisting of a galvanometer with strong field, in which the mass of the moving part is very small and frequency of vibration very high. -- Os`cil*lo*graph"ic (#), a.

The action produced by this tendency. Electric osmose, or Electric endosmose (Elec.), the transportation of a liquid through a porous septum by the action of an electric current.

A lightning conductor erected, as in a vineyard, for drawing off the electricity in the atmosphere in order to prevent hailstorms. [France] Knight.

A condition of the muscles induced by exposure to severe cold, in which the electrical action of the muscle is reversed.

, is apparent to, or is apprehended by, observation; as, the phenomena of heat, light, or electricity; phenomena of imagination or memory. In the phenomena of the material world, and in many of the phenomena of mind. Stewart.

A device, consisting essentially of an electric arc and a camera, by which a series of photographs of the variations of the arc due to sound waves are obtained for reproduction by means of a selenium cell and a telephone.

nt of natural science which treats of the causes (as gravitation, heat, light, magnetism, electricity, etc.) that modify the general properties of bodies; natural philosophy.

isks of cloth or paper moistened with acid water between them, for producing a current of electricity; -- commonly called Volta's pile, voltaic pile, or galvanic pile.

An alloy of German silver containing tungsten; -- used for forming electrical resistance coils and standards.

An apparatus for measuring the capacity of condensers, or the inductive capacity of dielectrics.

d act in pairs, with opposite tendencies or properties in the two elements, as magnetism, electricity, etc. -- Polar hare (Zoöl.), a large hare of Arctic America (Lepus arcticus), which turns pure white in winter. It is probably a variety of the common European hare (L. timidus). -- Polar lights, the aurora borealis…

, without comparison or relation to increase or diminution; as, wise, noble. -- Positive electricity (Elec), the kind of electricity which is developed when glass is rubbed with silk, or which appears at that pole of a voltaic battery attached to the plate that is not attacked by the exciting liquid; -- formerly calle…

d meekness. Sprat. Positively charged or electrified (Elec.), having a charge of positive electricity; -- opposed to Ant: negatively electrified.

The energy of an electrical charge measured by its power to do work; hence, the degree of electrification as referred to some standard, as that of the earth; electro-motive force.

Wires leading from various points of an electric system to a central station, where a voltmeter indicates the potential of the system at those points.

applied to produce changes in the volume and pressure of steam, air, or other fluids; and electricity, obtained by chemical action, and applied to produce alternation of magnetic force. (b) An engine, or machine, the object of which is to receive and modify force and motion as supplied by some natural source, and apply…

by drowning, breathing poisonous gases, or the like, or of one who has been stunned by an electrical shock.

A simple device, resembling a button in form, so arranged that pushing it closes an electric circuit, as of an electric bell.

Electricity. [R.]

Acting by the agency of heat and magnetism; as, a pyromagnetic machine for producing electric currents.