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- Newsgroups: rec.arts.sf.movies
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!malgudi.oar.net!chemabs!sdr57
- From: sdr57@cas.org ()
- Subject: Re: "moon 44" (was re: anothe
- Message-ID: <1992Dec31.180106.4483@cas.org>
- Sender: usenet@cas.org
- Organization: Chemical Abstracts Service, Columbus, Ohio
- References: <199228.2756.2648@dosgate> <6264@vexpert.dbai.tuwien.ac.at>
- Date: Thu, 31 Dec 1992 18:01:06 GMT
- Lines: 61
-
- In article <199228.2756.2648@dosgate>, by robert.winkler@canrem.com (robert winkler) writes:
- >
- > Oh, & what DOES happen to the human body in sudden vacum? I know they
- > don't explode, but what do they do?
-
- This is included in the "Frequently Asked Questions" (FAQ) listing for
- sci.space. I append the relevant section:
-
-
-
- HOW LONG CAN A HUMAN LIVE UNPROTECTED IN SPACE
-
- If you *don't* try to hold your breath, exposure to space for half a
- minute or so is unlikely to produce permanent injury. Holding your
- breath is likely to damage your lungs, something scuba divers have to
- watch out for when ascending, and you'll have eardrum trouble if your
- Eustachian tubes are badly plugged up, but theory predicts -- and animal
- experiments confirm -- that otherwise, exposure to vacuum causes no
- immediate injury. You do not explode. Your blood does not boil. You do
- not freeze. You do not instantly lose consciousness.
-
- Various minor problems (sunburn, possibly "the bends", certainly some
- [mild, reversible, painless] swelling of skin and underlying tissue)
- start after ten seconds or so. At some point you lose consciousness from
- lack of oxygen. Injuries accumulate. After perhaps one or two minutes,
- you're dying. The limits are not really known.
-
- References:
-
- _The Effect on the Chimpanzee of Rapid Decompression to a Near Vacuum_,
- Alfred G. Koestler ed., NASA CR-329 (Nov 1965).
-
- _Experimental Animal Decompression to a Near Vacuum Environment_, R.W.
- Bancroft, J.E. Dunn, eds, Report SAM-TR-65-48 (June 1965), USAF School
- of Aerospace Medicine, Brooks AFB, Texas.
-
- _____________________________________________________________________________
-
-
- I will add to this that I was told while in the U.S. Air Force that my
- time of *useful* consciousness (TUC) after a decompression at 30,000 ft
- would be of the order of 10-20 seconds, and that I would have to start
- doing things to save myself in that time. (Going to look for someone to
- fix the hole in the plane was not a recommended option. Screaming was
- possibly useful in equalizing pressure, but screaming certain things,
- such as "My God, my God, we're all going to die arghhhh," was frowned
- upon as bad for morale and not in keeping with the traditions of the
- service. We were also taught something called grunt breathing which
- was supposed to extend our TUC. It was quite undignified and, as it
- requires the presence of detectable atmosphere, not suited for space.)
-
- ******************************************************************************
- Renegade academician. They're a dangerous breed when they go feral,
- academics are...a chemist, too.
- -(James P. Blaylock in "Lord Kelvin's Machine")
-
- My organization hasn't agreed with any of my opinions so far, and
- I doubt they'll start now.
-
- Stanley "Ya nee speon" Roberts
-
-