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Chocolate cream cakes in vacuum :: Physishow Uni Bonn

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Uploaded by on Feb 17, 2007

A simple demonstration for the omnipresence of the atmospheric air pressure: pumping out the air from a cloche causes the small air bubbles in the cream of a chocolate cream cake (Schaumkuss) to expand! For a live demonstration, stop by at the 2006/07 Physikshow of the University of Bonn.
http://www.physikshow.uni-bonn.de/

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  • TOURCHER SO MEH STOMACH

  • it will shrink the cake as the air is being sucked in~ so you will have to make the pressure same both in and out before you crack/open the seal~

  • it becomes normal cos' there will be air around it as you know or don't know air travels fast or slow and doesn't have a fixed shape and it flows

  • tell me what happens if you crack the glass during the vacuum.

  • cool

  • hooray!

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