From:	"D. Ghost" <dghost@****.COM>
Subject:	Re: thermographic vision-question
Date:	Tue, 2 Feb 1999 20:13:43 -0600

On Tue, 2 Feb 1999 20:30:40 -0500 Paul Gettle <RunnerPaul@*****.COM>
writes:
>-----BEGIN PGP SIGNED MESSAGE-----
>At 11:00 PM 2/2/99 +0000, David Woods wrote:
>>As for Sonar, I can't imagine solid objects being transparent to sound
>>waves. Although, admittedly it's not my field.

Disclaimer: What follows is what I remember of the physics of sound... :)

Actually, the speed at which sound travels depends on the state of
matter: Sound travels through Gas the slowest. Faster through Liquid and
fastest through Solid. In fact the reason sounds sound funny underwater
is because the sound moves so fast that it messes with your ability to
tell where it's coming from.

>You've obviously _NEVER_ lived in a college dorm then. :)

No kidding.

--
D. Ghost
(aka Pixel, Tantrum, RuPixel)
"We called him Mother Superior because of the length of his habit" --
Trainspotting
"A magician is always 'touching' himself" --Page 123, Grimoire (2nd
Edition)

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