Subject: Date: Tue, 27 Apr 1999 23:05:21 +0100 From: "Anthony Vinters" <Tony@g0wfg.demon.co.uk> To: <hwang@phy03.phy.ntnu.edu.tw> I have found the tansverse and longitudinal waves. They are excellent, exactly what is needed. Being able to show the the phases of particles relative to each other is very useful. I will be able to direct my students to your site so they can see for themselves. Once again thank you for your efforts the results are most pleasing. Mr.A.E.Vinters. Rishworth School