luminous positive column

См. также в других словарях:

• positive column — Physics. the luminous region between the Faraday dark space and the anode glow in a vacuum tube, occurring when the pressure is low. * * * …   Universalium

• positive column — noun : the region in an electric discharge that extends from the anode to the Faraday dark space * * * Physics. the luminous region between the Faraday dark space and the anode glow in a vacuum tube, occurring when the pressure is low …   Useful english dictionary

• Neon lighting — Times Square, New York City, has been famous for elaborate neon lighting displays since th …   Wikipedia

• Cold cathode — This article is about light sources and indicators. For cold cathode ion sources, see Ion source. CCFL redirects here. For other uses, see CCFL (disambiguation). Cold cathode fluorescent lamp A cold cathode is a cathode used within nixie tubes,… …   Wikipedia

• anode glow — Physics. the luminous region between the positive column and the anode dark space in a vacuum tube, occurring when the pressure is low. * * * …   Universalium

• anode glow — Physics. the luminous region between the positive column and the anode dark space in a vacuum tube, occurring when the pressure is low …   Useful english dictionary

• literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium

• printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …   Universalium

• performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical.       The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …   Universalium

• Lighting — Not to be confused with lightning. For other uses, see lighting (disambiguation). Low intensity lighting and haze in a concert hall allows laser effects to be visible …   Wikipedia

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium