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negative glow


noun Physics.

the luminous region between the Crookes dark space and the Faraday dark space in a vacuum tube, occurring when the pressure is low.

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Nearby words

negative end-expiratory pressure, negative equity, negative eugenics, negative feedback, negative flag, negative glow, negative hallucination, negative income, negative income tax, negative ion, negative lens

Origin of negative glow

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019