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ass of yellowish 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).

ffered by conducting bodies. It bears an inverse relation to the conductivity, -- good conductors having a small resistance, while poor conductors or insulators have a very high resistance. The unit of resistance is the ohm. Resistance box (Elec.), a rheostat consisting of a box or case containing a number of resistanc…

An armature for a dynamo or motor having the conductors wound on a ring.

ribbed, and the edge is therefore often undulated in a characteristic manner. The large adductor muscle of some the species is much used as food. One species (Vola Jacobæus) occurs on the coast of Palestine, and its shell was formerly worn by pilgrims as a mark that they had been to the Holy Land. Called also fan shell…

A circuit formed or closed by a conductor of relatively low resistance because shorter or of relatively great conductivity.

To join, as the electrodes of a battery or dynamo or any two points of a circuit, by a conductor of low resistance.

A conducting circuit joining two points in a conductor, or the terminals of a galvanometer or dynamo, so as to form a parallel or derived circuit through which a portion of the current may pass, for the purpose of regulating the amount passing in the main circuit.

A disruptive discharge between a conductor traversed by an oscillatory current of high frequency (as lightning) and neighboring masses of metal, or between different parts of the same conductor.

t through which anything spouts; a discharging lip, pipe, or orifice; a tube, pipe, or conductor of any kind through which a liquid is poured, or by which it is conveyed in a stream from one place to another; as, the spout of a teapot; a spout for conducting water from the roof of a building. Addison. "A conduit with t…

Either of the ends of the conducting circuit of an electrical apparatus, as an inductorium, dynamo, or electric motor, usually provided with binding screws for the attachment of wires by which a current may be conveyed into or from the machine; a pole.

A union of two conductors, as bars or wires of dissimilar metals joined at their extremities, for producing a thermoelectric current.

A junction of two dissimilar conductors used to produce a thermoelectric current, as in one form of pyrometer; a thermocouple.

A funnel, or short, fiaring pipe, used as a guide or conductor, as for yarn in a knitting machine. Ear trumpet. See under Ear. -- Sea trumpet (Bot.), a great seaweed (Ecklonia buccinalis) of the Southern Ocean. It has a long, hollow stem, enlarging upwards, which may be made into a kind of trumpet, and is used for man…

A long, large box, pipe, or conductor, made of plank or metal plates, for various uses, as for conveying air to a mine or to a furnace, water to a mill, grain to an elevator, etc. Trunk engine, a marine engine, the piston rod of which is a trunk. See Trunk, 10. -- Trunk hose, large breeches formerly worn, reaching to…

Having only one adductor muscle, and one muscular impression on each valve, as the oyster; monomyarian.

and by United States Statute as, that electro-motive force which steadily applied to a conductor whose resistance is one ohm will produce a current of one ampère. It is practically equivalent to

The wires or conductors employed in a system of electric distribution.

ess; enthusiasm; fervor. "Ambition varnished o'er with zeal." Milton. "Zeal, the blind conductor of the will." Dryden. "Zeal's never-dying fire." Keble. I bear them record that they have a zeal of God, but not according to knowledge. Rom. x. 2. A zeal for liberty is sometimes an eagerness to subvert with little care wh…