X-Message-Number: 1415 From: (joseph krause) Newsgroups: sci.cryonics Subject: Why freeze a person? Date: 9 Dec 1992 05:34:42 GMT Message-ID: <> Well, I just can't figure out why it would be so hard to not freeze a person. It seems to me, that the phase diagram for water is the reverse of most substances, so that upon freezing, the density decreases, causeing expansion, and subsequent cell popping. Why then don't you take the supbject , put it into that perfluorodecalene plus I forget stuff you can breath whith that is a liquid. Hook up a big cooler a chamber of the liquid stuff that one can breath, and as the subject's temperature decreases, near zero, really pack those H20 molecules together with some high pressure, to prevent them from expanding, and freezing. I know this would require some extremely high pressures at liquid nitrogen's boiling pt, but the point is it will be safe on the tissues involved. I would like someone to try the following. Get some of that liquid stuff people are always dunking mice in and watching them breath, put it in a very high pressure cannister, hook up a cooling device and a very high pressure pump. check out a book from wherever that has an accurate phase diagram for water in it then, put the lid on the canister, and cool the mouse off, being carevul to make sure the pressure is at least great enough to keep the mouse from freezing, and cool the canister, mouse and all off within the pressure ratings of the canister, and then reverse the process by warming and decreasing pressure. This would be interesting to see. CAN IT BE DONE!? LOOKS GOOD ON PAPER TO ME!! Have fun...... pressure cooling mouses Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=1415