the beam of electrons
1Beam dump — A beam dump is a device that absorbs a beam. This may be a beam of photons ( light ) such as a laser beam, or a beam of electrically charged particles.Optical beam dumpsAn optical beam dump is an optical element used to absorb a beam of light.… …
2beam — beamless, adj. beamlike, adj. /beem/, n. 1. any of various relatively long pieces of metal, wood, stone, etc., manufactured or shaped esp. for use as rigid members or parts of structures or machines. 2. Building Trades. a horizontal bearing… …
3beam — beam1 [bi:m] n 1.) a) a line of light shining from the sun, a lamp etc ▪ the beam of a powerful flashlight b) a line of light, energy etc that you cannot see ▪ a laser beam ▪ a beam of electrons 2.) a long heavy piece of wood or metal used in… …
4beam — I. noun Etymology: Middle English beem, from Old English bēam tree, beam; akin to Old High German boum tree Date: before 12th century 1. a. a long piece of heavy often squared timber suitable for use in construction b. a wood or metal cylinder in …
5beam — [[t]bim[/t]] n. 1) bui any of various relatively long pieces of metal, wood, etc., used esp. as rigid members or parts of structures or machines 2) bui a horizontal bearing member, as a joist or lintel, or a transverse supporting structural… …
6beam tube — noun : a power amplifier vacuum tube in which the flow of electrons is channeled by means of beam forming plates and similarly spaced control and screen grids …
7beam-power tube — /beem pow euhr/, Radio. a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power. * * * …
8beam tube — /ˈbim tjub/ (say beem tyoohb) noun a valve as a diode in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements …
9beam-power tube — /beem pow euhr/, Radio. a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power …
10beam-pow|er tube — «BEEM POW uhr», a kind of vacuum tube for increasing power, in which the electrons flowing to the anode (plate) are focused into a beam which causes secondary electrons to be turned back …
