10 Sep
2003
10 Sep
'03
9:12 a.m.
Granted, it's not truly sound, it's pressure -- but in a rarified medium with one molecule per cubic km., what's the physical process that causes that one molecule to bump into the next one, a km. away? I can't imagine how else this pressure wave is passed. Thanks, Joe Joe Bauman science & military reporter Deseret News bau@desnews.com (801) 237-2169