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Crookes dark space

American  

noun

Physics.

  1. the dark space between the cathode glow and the negative glow in a vacuum tube, occurring when the pressure is low.

Etymology

Origin of Crookes dark space

First recorded in 1890–95; after Sir W. Crookes

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.