velocity modulation


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velocity modulation

[və′läs·əd·ē ‚mäj·ə′lā·shən]
(electronics)
Modulation in which a time variation in velocity is impressed on the electrons of a stream.
A television system in which the intensity of the electron beam remains constant throughout a scan, and the velocity of the spot at the screen is varied to produce changes in picture brightness (not in general use).
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