Sunday, January 9, 2011

Cold air balloon


We tried to inflate a balloon using cold air by sticking a balloon over the opening of an empty bottle we took out of the freezer. The idea was that as the air warms up, it expands, inflating the balloon. We left the bottle and balloon out overnight to warm up the captured air and found a somewhat inflated balloon in the morning. Not a very impressive effect. Maybe we need a bigger bottle.

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