Sum of two vectors.
You can drag the tip of blue and it will show new red arrow.

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(1390kB):double click downloaded file to run it. (11 times by 8 users) , Download EJS source View EJS source