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PURPOSE: To demonstrate the Doppler effect.
DESCRIPTION: A tuning fork is struck to activate the "clang tone" and whirled about the instructor's head on a string. The Doppler effect can easily be heard in a small classroom or a reasonably quiet lecture hall.
SUGGESTIONS:
REFERENCES: None. (PIRA 3B40.18)
EQUIPMENT: Doppler tuning fork on string.
SETUP TIME: 10 minutes.
