The following simulation shows the standing wave is compose of two sin-wave move in opposite direction.

You can change number of node(n), wave speed (v).
User can drag the blue dot, too!

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(1018.8kB):double click downloaded file to run it. (12 times by 11 users) , Download EJS source View EJS source