ubject: Your applets Date: Fri, 24 Jul 1998 13:13:16 -0400 From: diegel@med.unc.edu (Mike Diegel) To: hwang@phy03.phy.ntnu.edu.tw Fu-Kwun, My friend and I had been discussing what a sonic boom is and I was trying to describe how the sound waves come together to make it happen. We came across your web page at http://didaktik.physik.uni-wuerzburg.de/~pkrahmer/ntnujava/Doppler/Doppler.html and used the applet. We thought it was a fantastic illustration of what a sonic boom is, and we just wanted to let you know that your work was appreciated. Thanks for the help. Mike Mike Diegel diegel@med.unc.edu 966-9100