e•lec'tron-ray tube"

Pronunciation: (i-lek'tron-rā"), [key] Electronics.
a small cathode-ray tube having a fluorescent screen on which the pattern varies with the voltage applied to the grid: used chiefly in radio receivers to indicate accuracy of tuning. Also called electric eye.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

electron opticselectron spin resonance

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