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Ferranti valve : ウィキペディア英語版 | Ferranti valve
The Ferranti valve is a type of vacuum tube developed by Messers. Ferranti Ltd., in measuring the charge-to-mass ratio of an electron. It consists of an anode and two co-axial guard rings. A cathode, as a thin wire of tungsten filament, runs through this arrangement. When heated to a particular temperature using an HT electricity supply, electrons are emitted. ==External links==
* [http://www.nationalarchives.gov.uk/A2A/records.aspx?cat=422-199610_3&cid=-1#-1 The Ferranti Collection [1996.10/4 - 1996.10/6]]. Museum of Science and Industry in Manchester. Manchester, UK.
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「Ferranti valve」の詳細全文を読む
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