dark space

noun

: any of several regions or layers in the visible-glow discharge of a gas-filled cold-cathode electron tube that remain nonluminous or exhibit low light intensity until the ions in such spaces acquire sufficient energy to excite fluorescence in the tube gas see aston dark space , crookes dark space , faraday dark space

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Cite this Entry

“Dark space.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20space. Accessed 13 Jul. 2024.

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