Because what is science if not magic wearing a lab coat and fake mustache so you don’t recognize it, this is a video of science essayist Steve Mould using an additional prism and convex lens to recombine the ROYGBIV separated from one prism back into a beam of white light. That’s cool. But do you know what would be even cooler? “Let me guess, x-ray glasses.” I don’t even care about your underwear, I just want to see which lotto scratchers have winning numbers before I buy them.