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Title: Tin Can Phone
PIRA: 3B 39.10

Demonstrates: Sound travels through a medium other than air.
Description: Sound travels through a metal spring from one end of the phone to the other.

Instructions:

Items Used:

Notes: Works better than the string version you had as a kid. Math Description: None.

Size: 18' stretched out. Condition: Bad. Hazard: Tangling up the spring.
Schematic: None. Tech Specs: None. Web Links:
History:

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