Search the Dictionary

hence, the degree of electrification as referred to some standard, as that of the earth; electro-motive force.

An instrument for measuring or comparing electrial potentials or electro-motive forces.

To strike off an impression or impressions of, from type, or from stereotype, electrotype, or engraved plates, or the like; in a wider sense, to do the typesetting, presswork, etc., of (a book or other publication); as, to print books, newspapers, pictures; to print an edition of a book.

s measured in ohms. The reactance of a circuit is equal to the component of the impressed electro-motive force at right angles to the current divided by the current, that is, the component of the impedance due to the self-inductance or capacity of the circuit.

One of the poles of a voltaic battery; an electrode.

he open sea; as, to ride out the gale. to ride the lightning, (Colloq.) to be executed by electrocution in an electric chair.

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

plate, which thus becomes a facsimile of the original. The process has been superseded by electrotypy.

An electrodynamic spiral having the conjuctive wire turned back along its axis, so as to neutralize that component of the effect of the current which is due to the length of the spiral, and reduce the whole effect to that of a series of equal and parallel circular currents. When traversed by a current the solenoid exhi…

The space filled with air or other dielectric between high potential terminals (as of an electrostatic machine, induction coil, or condenser), through which the discharge passes; the air gap of a jump spark.

To cover, as an electrotype plate, with a thin layer of iron by electrolysis. The iron thus deposited is very hard, like steel.

To remove the metal coating from (a plated article), as by acids or electrolytic action.

aph groove and convert them into vibrations which are transmitted to a system (since 1920 electronic) which converts the signal into sound; also called needle. The stylus is frequently composed of metal or diamond. 3. The needle-like device used to cut the grooves which record the sound on the original disc during reco…

A prefix (also used adjectively) denoting the combination of constituents (especially electro-negative and electro-positive bodies) in the proportion of two to three; as, a subsesqui acetate, i. e., a salt having two equivalents of acetic acid to three of the base.

garded as forming the acid or negative constituent of sulphuric acid and the sulphates in electrolytic decomposition; -- so called in accordance with the binary theory of salts. [Written also sulphione.]

t are produced in two separate circuits. In the receiver these variations are utilized by electromagnetic devices and levers to move a pen as the pencil moves. --Tel`au*tog"ra*phist (#), n.

be used in a stock ticker, usu. of paper and being narrow but long. -- Stock ticker, an electro-mechanical information receiving device connected by telegraphic wire to a stock exchange, and which prints out the latest transactions or news on stock exchanges, commonly found in the offices of stock brokers. By 1980 la…

a magnet. -- Unipolar stimulation (Physiol.), the simulation sometimes produced when one electrode of an induction apparatus is applied to a nerve; -- called also unipolar induction action. Du Bois-Reymond.

pump. Same as Pulsometer, 1. -- Vacuum tube (Phys.), a glass tube provided with platinum electrodes and exhausted, for the passage of the electrical discharge; a Geissler tube. -- Vacuum valve, a safety valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, in order t…

The unit of electro-motive force; -- defined by the International Electrical Congress in 1893 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