This is too frickin' cool: Now you see him, now you don't!
It's something to do with mirrors. Mirrors rock.
More like this
This is one of my favorite demos. I like it because anyone can do it at home and people usually find the results surprising. Here is the situation:
By now you've probably all heard about the paper published by Plotnik, de Waal, and Reiss in the Proceedings of the National Academy of Sciences in late October titled "Self-recognition in an Asian elephant." I suspect that for p
A little bit before Christmas, I spent an afternoon swapping mirrors out of one line of the apparatus. I was losing too much of the laser light before it went into the chamber, and replacing the mirrors increased the power entering the apparatus by a factor of two or so.
Take another look at this picture of the Rokeby Venus from last week's post on mirrors in art: