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- From: gumby@ucsd.edu (Henry Ptasinski)
- Newsgroups: sci.misc
- Subject: Re: Human bodies explode in vacuum?
- Message-ID: <2243@deadmin.ucsd.edu>
- Date: 5 Nov 92 01:48:50 GMT
- References: <1992Nov3.232240.5653@ctp.com>
- Sender: news@deadmin.ucsd.edu
- Lines: 32
-
- In article <1992Nov3.232240.5653@ctp.com> bpita@ctp.com (Bob Pitas) writes:
- > Actually, you can't compress liquids. It's the gases (nitrogen, to
- > be exact) that cause 'rapture of the deep' for divers. The nitrogen
- > gets compressed during the decent, and then forms bubbles on the ascent.
- > These bubbles block blood vessels, and generally do bad things. The
- > phenominae is called 'Nitrogen Narcosis'.
-
- Actually, you're mixing two different (but related) phenomenona. Nitrogen
- Narcosis, a.k.a. "rapture of the deep", occurs in divers at depths of around
- 100' and greater when diving using regular air. The effects are similar to the
- effects of alcohol. It occurs, I believe, due to the excess nitrogen loading
- in brain tissues having some impact on neurotransmitter functioning. The
- excess loading occurs due to breating of air at pressures greater than 1 ATM.
- The excess nitrogen remains in solution in the body due to the higher external
- pressure.
-
- Bubble formation occurs upon ascent if the excess nitrogen is not allowed to
- outgass from the tissues at a fast enough rate. The reduced pressure at
- shallower depths allows the nitrogen to come out of solution and form bubbles.
- These bubbles are the cause of Decompression Sickness, a.k.a. "The Bends".
-
- What does this imply for bodies exposed to vacuum? Well, if the body cannot
- maintain sufficient internal pressure, then appears reasonable that the
- nitrogen present in the tissues could come out of solution, causing symptoms of
- Decompression Sickness. How likely this is depends on what pressure changes
- occur within the body when exposed to vacuum.
-
- Did this answer any questions? Probably not, but I just felt like slacking off
- a little and adding my (probably not very helpful) opinion.
-
- Henry P.
- gumby@ucsd.edu
-