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?
It would be good to vary the size of the slits or apertures.