Algodoo

Interesting use of laser rotation! Overall, the scene was well made, and is a good tutorial, but I believe it could be even better if you were to add some text that explains the basics of wave interference, and what the scene is demonstrating. Without supportive text, I think the scene is meaningless to some people who don't have a clue what they are looking at.

I appreciate and agree with your comment, but I'm not sure what, if anything, I'm going to do about it.

No prob. It was just a suggestion.