- negative glow
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the luminous region between the Crookes dark space and the Faraday dark space in a vacuum tube, occurring when the pressure is low.[1885-90]
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Universalium. 2010.
negative glow
Look at other dictionaries:
negative glow — noun : a narrow luminous region that occurs in an electrical discharge in a gas at low pressure (as in a Crookes tube) and that is often the second such region from the cathode * * * Physics. the luminous region between the Crookes dark space and … Useful english dictionary
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crookes dark space — ˈkru̇ks noun Usage: usually capitalized C Etymology: after Sir William Crookes died 1919 English physicist physics : a dark space between the cathode glow and the negative glow called also cathode dark space * * * Physics. the dark space between… … Useful english dictionary
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faraday dark space — noun Usage: usually capitalized F : a dark space of low light intensity between the positive column and the negative glow from the cathode in a vacuum tube * * * Physics. the dark region between the negative glow and the positive column in a… … Useful english dictionary
Crookes dark space — Physics. the dark space between the cathode glow and the negative glow in a vacuum tube, occurring when the pressure is low. Also called Crookes space. [1890 95; after Sir W. CROOKES] * * * … Universalium
Faraday dark space — Physics. the dark region between the negative glow and the positive column in a vacuum tube occurring when the pressure is low. [1890 95; named after M. FARADAY] * * * … Universalium
Crookes dark space — noun the dark space in a vacuum tube between the cathode and the negative glow, occurring when pressure is very low. Also, Crookes space, cathode dark space, cathodic dark space. {named after Sir William Crookes, 1832–1919, English chemist and… …
