Did you know that colorless rainbows exist? It's called a fog bow and (like the name suggests) the phenomenon appears not in the rain, but in the fog instead. The colors are weak, because the tiny water droplets are much smaller than actual rain drops. Not only did British photographer Melvin Nicholson see one, he managed to take a photo of it as well! He was walking around in Rannoch Moor, Scotland, when a white rainbow appeared over a lone tree in the chilly landscape. The breathtaking shot was taken with a Canon 5DS and a Canon 16-35mm f/4 lens at 16mm, f/8, 1/1000s, and ISO 100.