EntityQ1321229· pop 10· linked from 18 articleslaser microphoneSign in to savesurveillance device that uses a laser beam to detect sound vibrations in a distant objectConnectionssoundEntityInternational Standard Book NumberEntitylaserEntityLavrentiy BeriaEntityvibrationEntitysurveillanceEntityinterferometryEntityLeon ThereminEntityPhotophoneEntitypassive radarEntityThe ThingEntityLaser Doppler vibrometerEntitylaser turntableEntityCategoriesCovert listening devicesInventions by Leon ThereminMicrophonesOptical devicesSurveillance