Submitted by silvertone on Thu, 02/21/2008 - 11:29 I found this site the other day, very informative. http://hyperphysics.phy-astr.gsu.edu/Hbase/acoustic/revtim.html#c4
I found this site the other day, very informative.
http://hyperphysics.phy-astr.gsu.edu/Hbase/acoustic/revtim.html#c4