Description

BELL IN VACUUM

BELL IN VACUUM:

Specifications:

• Demonstrates that sound waves need a material medium for the propagation and cannot travel through vacuum.
• For use on pump plates with diameter at least 15 cm.
• It consists of an electric Bell operating on 4-6 volts AC/DC, suspended inside bell jar through a pair of thick metal wires from a rubber bung that seals the jar from the top.
• The wires terminating in 4 mm socket terminals on the upper side of rubber bung for electrical connection to the bell. 1120120/1 Sizes 9”×6” (height × diameter) of bell jar. 1120120/2 Sizes 8”×4” (height × diameter) of bell jar.

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