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- Path: sparky!uunet!news.claremont.edu!nntp-server.caltech.edu!SOL1.GPS.CALTECH.EDU!CARL
- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Newsgroups: alt.folklore.science
- Subject: Re: very cold beer
- Date: 26 Dec 1992 04:26:38 GMT
- Organization: HST Wide Field/Planetary Camera
- Lines: 31
- Distribution: world
- Message-ID: <1hgmtuINNfjb@gap.caltech.edu>
- References: <1h5o4nINNo2h@usenet.INS.CWRU.Edu>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <1h5o4nINNo2h@usenet.INS.CWRU.Edu>, mag6@po.CWRU.Edu (Martin A. Gulaian) writes:
- =I assume that the pressure in the capped beer bottle depresses the
- =freezing point of beer the same way that the freezing point of water drops
- =with increased pressure.
-
- That's probably part of it.
-
- =When the bottle is uncapped, pressure returns to
- =normal, the beer finds itself supercooled, and freezes in a hurry, starting
- =at some tiny bubble maybe.
-
-
- =My question for the net:
- =
- =Why does the WHOLE beer freeze solid? If the beer is only, say, 20 deg F
- =below freezing, how can it absorb all the heat from the freezing ice? To
- =rephrase, a beer-sized block of ice would drop a beer-sized glass
- =of water a lot more than 20 deg F before melting. Shouldn't the inverse
- =apply here?
-
- Well, when CO2 expands, it absorbs heat. This is the basic principle used for
- refrigeration systems: Expanding a gas requires work. The energy required to
- expand the gas comes from its surroundings.
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-