Subject: Your Doppler effect applet Date: Sun, 8 Mar 1998 22:39:05 -0600 From: "Michael Vershinin" <vershini@soltec.net> To: <hwang@phy03.phy.ntnu.edu.tw> Hi, Your applet is pretty neat, but since you asked for suggestions... 1) I would not allow the user to set a negative wavelength. 2) If negative source speed is chosen, your source runs off the edge of the window. 3) Negative wave speed is a bit awkward, since your source is actually a sink. Michael Vershinin