| 3/20/2009 |
6F10.20 |
Color Filters |
I don't need the variac but would like overhead diffraction grating setup (overhead projector, slits, diffraction grating) as well as the large red plastic filter. Additionally, I would like a second overhead projector, the high-quality red overhead filter (with stray light sources blocked off if possible), square aperture masks, colored knee pads, and blue coffee can. |