Faraday dark space

noun

Physics.

1. the dark region between the negative glow and the positive column in a vacuum tube occurring when the pressure is low.

Word History and Origins

Origin of Faraday dark space¹

First recorded in 1890–95; named after M. Faraday

Example Sentences

Faraday discovered the existence of a dark space round the negative electrode which is usually known as the “Faraday dark space.”

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The force reaches a minimum either in the negative glow itself or in the part of the Faraday dark space just outside, after which it increases towards the positive column.

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Next to the third layer we have another dark space called the “Faraday dark space.”

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The dimensions of the Faraday dark space and the positive column vary greatly with the current passing through the gas and with its pressure; sometimes one or other of them is absent.

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