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- Path: sparky!uunet!dtix!mimsy!smoke.brl.mil
- From: gwyn@smoke.brl.mil (Doug Gwyn)
- Newsgroups: rec.guns
- Subject: Re: shooting under water?
- Message-ID: <19583@smoke.brl.mil>
- Date: 22 Jan 93 04:00:34 GMT
- Sender: magnum@mimsy.umd.edu
- Organization: U.S. Army Ballistic Research Lab, APG MD.
- Lines: 20
- Approved: gun-control@cs.umd.edu
-
-
- In article <9301181246.aa23478@brahms.tinton.ccur.com> tmoore@tinton.ccur.com (Tim Moore) writes:
- #->Interesting. So tell me, if you shoot a gun in "space" i.e.
- #->near-vacuum, would you hear anything? No air for the pressure wave,
- #->but I would think that the expanding gas would reach your (spacesuit
- #->enclosed) ears. Neglecting the spacesuit for the moment, would you
- #->hear anything? If yes, what would it sound like?
-
- No, the gas would travel far more slowly than an acoustic wave in a demium.
- You wouldn't hear anything transported by the bulk gas -- it's the WAVE
- propagation, not the atoms of the medium as such, that cause sound.
-
- #Maybe this is *another* dumb question (I'm sure someone will point that out:)
- #but if all the air leaks out of my .45 acp cartridge while I'm space
- #walking will the primer/powder still burn?
-
- Yes, just as solid-propellant rocket motors work just fine in space.
- The exothermic chemical reaction called "burning" of the gunpowder
- does not involve (to any significant extent) any air that happens to
- be nearby; it is self-contained.
-