electron valve
101Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …
102Fluorescent lamp — A fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light.Unlike… …
103Backward wave oscillator — A backward wave oscillator (BWO), also called carcinotron (a trade name for tubes manufactured by CSF, now Thales) or backward wave tube, is a vacuum tube that is used to generate microwaves up to the terahertz range. It belongs to the traveling… …
104Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …
105Список игр на Xbox 360 — Анонсированные или вышедшие игры Ниже представлен список игр, вышедших для Xbox 360 в рознице и в цифровом виде для Xbox Live Arcade. Содержание: Наверх  0–9 A B C D E F G H I J K …
106Debye sheath — The Debye sheath (also electrostatic sheath) is a layer in a plasma which has a greater density of positive ions, and hence an overall excess positive charge, that balances an opposite negative charge on the surface of a material with which it is …
107nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …
108Pilot light — A pilot light is a small gas flame, usually natural gas or liquefied petroleum gas, which is kept alight in order to serve as an ignition source for a more powerful gas burner.UsesCommon applications include household water heaters, central… …
109Single-ended triode — In a single ended triode (SET) vacuum tube electronic amplifier the entire audio signal waveform is amplified by the power triode, in contrast to push pull amplifiers where two output tubes work together in phase opposition. Small signal audio… …
110Historique Des Tubes Électroniques — Le tube électronique a longtemps été le seul composant actif existant. Il a permis la fabrication, souvent en grande série, des premiers appareils électroniques : récepteur radio, télévision, radar, etc. Le tube électronique a connu son… …
