exciter lamp
noun
a lamp that produces a light that passes through a film soundtrack and impinges on a photoelective cell causing current fluctuations that actuate a loudspeaker.
Origin of exciter lamp
First recorded in 1935–40
Words nearby exciter lamp
excite,
excited,
excited state,
excitement,
exciter,
exciter lamp,
exciting,
exciting eye,
excito-,
excitomotor,
exciton