beam'-pow•er tube"

Pronunciation: (bēm'pou"ur), [key] Radio.
a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power.

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

Beamonbeam sea


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