Faraday dark space

American  

noun

Physics.

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

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Etymology

Origin of Faraday dark space

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.”

From Project Gutenberg

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.

From Project Gutenberg

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

From Project Gutenberg

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.

From Project Gutenberg