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Author Topic: Identifying Materials Using Archimedes' Principle.  (Read 48357 times)

Offline John Hill

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Re: Identifying Materials Using Archimedes' Principle.
« Reply #25 on: February 12, 2015, 01:40:29 AM »
I made a balance once to demonstrate to kids that "air is not nothing"  by weighing a balloon before and after inflating it.

(Yes I know, what that really shows is that compressed air is heavier than ambient pressure.)
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