(Encyclopedia)
CE5
Triode electron tube
electron tube, device consisting of a sealed enclosure in which electrons flow between electrodes separated either by a vacuum (in a vacuum tube) or by an…
(Encyclopedia) electron-volt, abbr. eV, unit of energy used in atomic and nuclear physics; 1 electron-volt is the energy transferred in moving a unit charge, positive or negative and equal to that…
(Encyclopedia) electrophorus, device used to generate static electric charges. It has two parts: a nonconducting plate (e.g., of hard rubber) that is negatively charged and a metal plate with an…
(Encyclopedia) Alsop, RichardAlsop, Richardôlˈsəp [key], 1761–1815, American author, b. Middletown, Conn. Best remembered as one of the Connecticut Wits, he collaborated with Theodore Dwight and…
(Encyclopedia) electroscope, device for detecting electric charge invented by Nollet in 1748. There are various types of electroscopes. The most common has a cylindrical metal case closed by two…
(Encyclopedia) electrostatics, study of phenomena associated with charged bodies at rest (see charge; electricity). A charged body has an excess of positive or negative charges, a condition usually…
