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• 09:38, 13 April 2022 Physdemo talk contribs created page Doppler Effect (Created page with "{{NewDemo|subject=OWS|topic=Waves|file1=Doppler Effect.gif}} A foam ball that holds a 9 volt battery and a small buzzer. Throw it over the heads of the students and the doppler effect is well perceived. '''Location:''' * Shelf D-4")