Is AC or BC a straight line?

Move mouse inside box and find out the answer?

You can drag the two sliders and study effect due to width/distance!

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(958.8kB):double click downloaded file to run it. (11 times by 11 users) , Download EJS source View EJS source