cathode glow

American  

noun

1. a luminous region between the Aston dark space and the Crookes dark space in a vacuum tube, occurring when the pressure is low.

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Example Sentences

These are four short stories, delicate as fugues, the most ambitious of which tells of the bewilderment of a pair of old radicals who reminisce about hunger and human rights while their grandchildren sun themselves in the cathode glow of the affluent society.

From Time Magazine Archive