THE RAINBOW MAKER - HERE COMES THE SCIENCE

My office was filled with rainbows this morning and this is how they are made. There are so many bevels and angles on this mirror which refract the light coming through the blind, that sometimes the spectra intersect (like the double rainbow I blipped on Monday), and sometimes they don't, and sometimes they're one way up, and sometimes another. And the shadows from the blind turn them into caterpillars. So that's it then.