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pole, in electricity and magnetism

(Encyclopedia)pole, in electricity and magnetism, point where electric or magnetic force appears to be concentrated. A single electric charge located at a point is sometimes referred to as an electric monopole. An ...

MSI

(Encyclopedia)MSI: see integrated circuit.

LSI

(Encyclopedia)LSI: see integrated circuit.

VLSI

(Encyclopedia)VLSI: see integrated circuit.

automatic tuning control

(Encyclopedia)automatic tuning control (ATC), method or device to keep a radio or television receiver automatically tuned to a desired frequency or channel. Assuming that the receiver is at least approximately tune...

Davis, David

(Encyclopedia)Davis, David, 1815–86, American jurist, associate justice of the U.S. Supreme Court (1862–77), b. Cecil co., Md., grad. Kenyon College, 1832; cousin of Henry Winter Davis. In 1836 he settled as a ...

ionization chamber

(Encyclopedia)ionization chamber, device for the detection and measurement of ionizing radiation. It consists basically of a sealed chamber containing a gas and two electrodes between which a voltage is maintained ...

locomotive

(Encyclopedia)locomotive, vehicle used to pull a train of unpowered railroad cars. Richard Trevithick, a British engineer and inventor, built and operated (1803–4) the first successful steam engine locomotive f...

Coffin, Charles Albert

(Encyclopedia)Coffin, Charles Albert, 1844–1926, American businessman, b. Fairfield, Maine. After working in his uncle's shoe business in Lynn, Mass., he established his own shoe factory, Coffin and Clough. In 18...

arc, in electricity

(Encyclopedia)arc, in electricity, highly luminous and intensely hot discharge of electricity between two electrodes. The arc was discovered early in the 19th cent. by the English scientist Sir Humphry Davy, who so...