On Sat, 29 Sep 2007 12:59:39 -0700, Keith Hughes
wrote:

Gee, I didn't know you were using 'smart' molecules that travel *only*
in the direction you want them too. And they don't bump into each other
in the process. Wow, that's really neat, how did you accomplish that?

I noticed that.

Isn't the speed of sound, whatever it is, what it is because it _is _
the molecular speed? They both vary with temperature but not pressure.

Casady