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Why there have bubble in beer

by alnywk
Tags: beer, bubble
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alnywk
#1
Sep23-06, 10:32 PM
P: 15
why there have bubble in beer,
what the pathway do the bubbles go in pv diagram


my idea :

assume temperature is constant
pressure in the bottom is higher than the suface
so the bubbles size increase

then where the energy come from????
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alnywk
#2
Sep23-06, 10:46 PM
P: 15
is this action violate the first law of thermodynamics??
how about if you shake the beer, is it mean you input the energy into the system , then do it violate the 1st of thermodynamic?
turbo
#3
Sep24-06, 07:58 AM
PF Gold
turbo's Avatar
P: 7,363
Run a Google search on "carbonation" and "beer" and you will find out all you need to know about how these bubbles seem to appear from nowhere.


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