翻訳と辞書 Words near each other ・ Electron configuration ・ Electron configurations of the elements (data page) ・ Electron cooling ・ Electron counting ・ Electron crystallography ・ Electron cyclotron resonance ・ Electron deficiency ・ Electron degeneracy pressure ・ Electron density ・ Electron diffraction ・ Electron donor ・ Electron electric dipole moment ・ Electron energy loss spectroscopy ・ Electron equivalent ・ Electron excitation ・ Electron gun ・ Electron hole ・ Electron holography ・ Electron Hydroelectric Project ・ Electron interferometer ・ Electron ionization ・ Electron liquid ・ Electron localization function ・ Electron magnetic circular dichroism ・ Electron magnetic moment ・ Electron microprobe ・ Electron microscope ・ Electron Microscopy Center ・ Electron mobility ・ Electron multiplier Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Electron gun ： ウィキペディア英語版 Electron gun An electron gun (also called electron emitter) is an electrical component in some vacuum tubes that produces a narrow, collimated electron beam that has a precise kinetic energy. The largest use is in cathode ray tubes (CRTs), used in nearly all television sets, computer displays and oscilloscopes that are not flat-panel displays. They are also used in FED displays, which are essentially flat-panel displays made out of rows extremely small cathode ray tubes. They are also used in microwave linear beam vacuum tubes such as klystrons, inductive output tubes, travelling wave tubes, and gyrotrons, as well as in scientific instruments such as electron microscopes and particle accelerators. Electron guns may be classified by the type of electric field generation (DC or RF), by emission mechanism (thermionic, photocathode, cold emission, plasmas source), by focusing (pure electrostatic or with magnetic fields), or by the number of electrodes. ==Characteristics== A direct current, electrostatic thermionic electron gun is formed from several parts: a hot cathode, which is heated to create a stream of electrons via thermionic emission, electrodes generating an electric field which focus the beam (such as a Wehnelt cylinder), and one or more anode electrodes which accelerate and further focus the electrons. A large voltage between the cathode and anode accelerates the electrons. A repulsive ring placed between them focuses the electrons onto a small spot on the anode at the expense of a lower extraction field strength on the cathode surface. Often at this spot is a hole so that the electrons that pass through the anode form a collimated beam and finally reach a second anode called a collector. This arrangement is similar to an Einzel lens. Most color cathode ray tubes – such as those used in color televisions – incorporate three electron guns, each one producing a different stream of electrons. Each stream travels through a shadow mask where the electrons will impinge upon either a red, green or blue phosphor to light up a color pixel on the screen. The resultant color that is seen by the viewer will be a combination of these three primary colors. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Electron gun」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.