You could try it with a regular penlight also. See what happens with white light. ;)

Finally got something rigged up.
How can I post a .MOV file here?

Quote this post to see how it's written. ;)

And I am wondering under what conditions one would use these mirrors. Anyone know?

They separate colors by reflecting one and letting everything else pass through, but except for applications like the projector, I can't think of a use other than jewelry.

????
But I didn't even...
...and I never even...
...so how did you know where...
????

You *are* a wizard!

{I still don't know how to do it.}

Border security?

What is this?

To be fair, I have only resized this to dimensions more suitable for posting here. Yes, it *is* horribly overexposed. That's the only thing obscuring the obvious reality of the subject.

Your blanky. :haha:

tooth and beard.

nope, nope.

Cotton Candy?

your poosie?

strawberry milk shake froth

I was thinking along the lines of Pico's guess.