PURPOSE: To demonstrate the change in frequency of a tuning fork at liquid nitrogen temperature.
DESCRIPTION: Cool down one of the two identical tuning forks in liquid nitrogen. When it is cooled, beats are observed between identical tuning forks, one of which has been cooled.
REFERENCES: (PIRA unavailable.)
EQUIPMENT: Two identical tuning forks with hammer, liquid nitrogen.
SETUP TIME: 5 min.
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