What is IRIDESCENCE? Beautiful Butterfly wings
Channel: Birds Butterflies Nature
Date: 28/10/2022

What is IRIDESCENCE? A butterfly wings showing the iridescence of colours on its wings! Great Eggfly is the name of the butterfly found in India.
Photo by Ms. Hetali Karia.  

Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change color as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, feathers, butterfly wings and seashell nacre, and minerals such as opal. It is a kind of structural coloration that is due to wave interference of light in microstructures or thin films (from Wikipedia).