From: Rick Matthews <matthews@wfu.edu> Organization: Wake Forest University To: hwang@phy03.phy.ntnu.edu.tw Subject: Great applet! I just discovered your lens applet. It is a great tool for helping students come to understand lenses and mirrors. Unless you object, I would like to assign a problem to my students based on this applet. -- Rick Matthews matthews@wfu.edu Department of Physics http://www.wfu.edu/~matthews Wake Forest University 336-758-5340 (Voice) Winston-Salem, NC 27109-7507 336-758-6142 (FAX) USA