Description
This pump plate and bell jar can be used to demonstrate the nature of sound waves by showing that sound can not travel in a vacuum. As air is pumped out of the jar the sound from the bell becomes fainter and fainter until it can no longer be heard.
Includes bell jar, vacuum plate with valve, rubber seal, bell and instructions
Bell may be removed for other vacuum experiments
Vacuum pump and 2x AA batteries required (not supplied).
Type
Bell in a vacuum set
Size
150mm
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