It used be 3 1/2 in floppies now it is CD's. We have plenty of them
lying around thanks to AOL and other sources. They look neat. What
kind of uses have Phys-lers found for these CD's? I'll list a few I
know of.
1. Diffraction grating
2. Hovercraft
3.Wheels for mousetrap cars.
4. Coaster for my teacup