Laser Microscope
An interesting impromptu project: a laser pointer directed through a drop of water projects a large magnified image on the wall.
Teravolt.org – Laser Microscope.
This reminded me of the setup that Gabor described decades ago for inline digital holography. I might have to give this a try sometime.
httpv://www.youtube.com/watch?v=2aK_a-jr-tI