Hi Prof Hwang,

The simulation is really great. Thumb up!

I am hoping that if you would guide me of how to modify your your simulation to add some new features which are required for some teaching demo.
- Have a concave and convex screen
- Rotate the parallel screen such that one side is nearer to the slits and the side is farther.
- Possible to have white light for both slits
- Possible to change the size of the double slits independently. (I know it sound strange.)

Do you have any Fraunhofer diffraction simulation that look Figure.5 on the following website?
http://www.marcuswinter.de/archives/1415
It would be good to vary the size of the slits or apertures.

Cheers.
Lee