$Cloud iridescence or irisation is a colorful optical phenomenon that occurs in a cloud and appears in the general proximity of the Sun or Moon. Iridescent clouds are a diffraction phenomenon caused by small water droplets or small ice crystals individually scattering light. If parts of clouds contain small water droplets or ice crystals of similar size, their cumulative effect is seen as colors. The cloud must be optically thin, so that most rays encounter only a single droplet. Iridescence is therefore mostly seen at cloud edges or in semi-transparent clouds, while newly forming clouds produce the brightest and most colorful iridescence.$

iridescence in clouds

Format JPG 300 DPI

Image information

Author: dreamstime
License:buy for Personal Use & Commercial
File Type: JPG
Views: times

Comprar

air appears bad blue bright cloud clouds colorful colors crystals cumulative dark diffraction droplet droplets edge effect general ice individually iridescence iridescent irisation light moon optical optically orange phenomenon pink proximity ray rays scattering semi shining sky small sun thin threatening transparent water weather yellow