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Aston dark space

American  

noun

Physics.

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

Etymology

Origin of Aston dark space

Named after F. W. Aston

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.