Click

http://www.youtube.com/watch?v=bljZ5L_R6sE
  to view youtube movie
The following is a simulation of the above youtube movie.
Click Play button, then try to drag the period T to a smaller value
(for case A :near T=1.0s, for case B: near T=0.5s) and find out what will happen!

translate strings in simulation to different language format before download
Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
Download EJS jar file(1047.6kB):double click downloaded file to run it. (19 times by 12 users) , Download EJS source (1 times by 1 users) View EJS source