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Author Topic: Interference of two point sources in 3D  (Read 7042 times)
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Fu-Kwun Hwang
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on: January 11, 2011, 10:30:21 am » posted from:Taipei,T'ai-pei,Taiwan

The following simulation show two point source located at P1=(x1,y1,z) and P2=(x2,y1,z)

It only show waves moving toward a common point P=(x,y,z), so that the interference can be shown at (x,y,z)
y1(t)=h*sin(k*r1-w*t) where r1 is the distance of bwtween P1 and P.
y2(t)=h*sin(k*r2-w*t) 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).

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* optics_interference3D2S.jpg (23.02 KB, 543x554 - viewed 410 times.)
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Reply #1 on: January 11, 2011, 01:21:36 pm » posted from:SINGAPORE,SINGAPORE,SINGAPORE

This is a simple simulation that is great for visualizing only the point of interest P, without looking at other parts of the interference.

I have remix something here http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2067.0 as well
Ejs Open Source Ripple Tank Interference Model java applet http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2067.0
my 3D effect can also be observed but it is too complex, under surface visualization.

* rippletank3dsurfaeplot.png (38.66 KB, 622x283 - viewed 362 times.)
« Last Edit: January 11, 2011, 01:26:52 pm by lookang » Logged
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