In the late afternoon, on a hot and humid day, you might look up and be lucky enough to catch a glimpse of iridescent clouds that gleam with the colors of the rainbow. The rare phenomenon occurs when sunlight diffracts off of uniformly sized water droplets in the atmosphere, scattering different amounts of sunlight, with different colors being deflected by different amounts. Also known as "fire rainbows" or "rainbow clouds," the uncommon occurrence is most often observed ...
