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• 10:58, 13 April 2022 Physdemo talk contribs created page Doppler Effect 2 (Created page with "{{NewDemo|subject=OWS|topic=Waves|file1=Interference_Sound_Max_Min.gif}} Four speakers on two arms are rotated by a motor. A common signal is sent to selected speakers. As this spins one speaker approaches, the other is moving away and beats can be heard created by the slightly different frequencies being created. '''Location: ''' * On top of the Film Loops Cabinet")