Re: Here's one for Bob (hope it makes your head spin)

On 09/10/07 06:46, briggs@xxxxxxxxxxxxxxxxx wrote:
In article <snip>, Ron Johnson <ron.l.johnson@xxxxxxx> writes:
On 09/08/07 11:53, JF Mezei wrote:
Ron Johnson wrote:

Sorry. Since the bullet travels I still don't understand how N3
makes the *bullet* fly out the barrel.

During combustion, the gases/matter between the start of the barrel and
the bullet want to greatly expand. But they are not given room to
expand, so the pressure rises to accomodate this.

As the pressure rises, the gases push in every direction. When they push
against the gun barrel, nothing happens because the barrel is not
eleastic and doesn't let expansion occur.
You've never watched /Mythbusters/.

In the normal firing of a gun the barrel is approximately rigid. The
fact that in extraordinary circumstances, the barrel is spectacularly
non-rigid is normally irrelevant.

But spectacularly enjoyable to watch.

As is what happens to a supersonic bullet at a 22 degree angle into
the water.

And shooting a 12ga deer slug into a plexiglas tank of water.

[snip]

Personally I find that personifying physical forces and talking
about what gasses "want" to do somewhat distasteful.

ACK. Anthropomorphism is "natural", but can easily confuse the issue.

--
Ron Johnson, Jr.
Jefferson LA USA

Give a man a fish, and he eats for a day.
Hit him with a fish, and he goes away for good!
.

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