Medicine & TechnologyA rainbow is always formed in circles, and its shape is due to the way light from the Sun is refracted. Learn more about it in this article.
To understand how a mirage forms, we must figure out how light travels through air and how it is affected by refraction. Learn more about it in this article.
Photographs of the Sun with concentric rainbow-colored rings around it were captured in Finland, later found out to be caused by pollen particles floating in the air. Find out more about it in this article.