Iridescent Cloud

The occurrence or phenomenon is referred to as irisation or iridescence. What we saw was an iridescent cloud. (Not to be confused with a fire rainbow.) My research shows that the term iridescent cloud hails from the Greek term “iris” which in Greek is the essence of the rainbow. When you observe this in a cloud it is the result of minute ice crystals or water droplets in the air. In scientific terms the outcome is DIFFRACTION. Read More …