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

, 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.

Acting by the operation of both light and electricity; -- said of apparatus for producing pictures by electric light.

Pert. to, or capable of developing, photo-electricity.

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.

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.

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…

Pertaining to, or dependent on, pyroelectricity; receiving electric polarity when heated.

Electricity. [R.]

other, or the action upon such chemical agents of some form of energy, as heat, light, or electricity, resulting in a chemical change in one or more of these agents, with the production of new compounds or the manifestation of distinctive characters. See Blowpipe reaction, Flame reaction, under Blowpipe, and Flame.…

owish brown solid inflammable substances, of vegetable origin, which are nonconductors of electricity, have a vitreous fracture, and are soluble in ether, alcohol, and essential oils, but not in water; specif., pine resin (see Rosin).

Containing or exhibiting resinous electricity.

pertaining to resin; of the nature of resin; resembling or obtained from resin. Resinous electricity (Elec.), electricity which is exited by rubbing bodies of the resinous kind. See Negative electricity, under Negative.

as neurasthenia, by rest and isolation with systematic feeding and the use of massage and electricity.

An instrument for detecting the presence or movement of currents, as of electricity.

sthead and the yardams. It has also been observed on land, and is due to the discharge of electricity from elevated or pointed objects. A single flame is called a Helena, or a Corposant; a double, or twin, flame is called a Castor and Pollux, or a double Corposant. It takes its name from St. Elmo, the patron saint of s…

econdary current (Elec.), a momentary current induced in a closed circuit by a current of electricity passing through the same or a contiguous circuit at the beginning and also at the end of the passage of the primary current. -- Secondary evidence, that which is admitted upon failure to obtain the primary or best evi…