It only show waves moving toward a common point P=(x,y,z), so that the interference can be shown at (x,y,z)

where r1 is the distance of bwtween P1 and P.

and

where r2 is the distance of bwtween P2 and P.

You can change the distance between source with slider for d, location of observed point with slider for x,wavelength with slider for lambda.

Two blue arrows represent phases for those two wave at P. i.e. represent (k*r1-w*t and k*r2-w*t).

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

Download EJS jar file(1092.9kB):double click downloaded file to run it. (67 times by 20 users) , Download EJS source View EJS source