In the 13th century Robert Grossteste, who became Bishop of Lincoln, wrote a treatise on the rainbow, suggesting it was not reflection but refraction in a cloud. “Then finally in the 13th ...

Rainbows are caused by the refraction and reflection of sunlight through water ... is darkened by a cloud's shadow Monday afternoon as a rainbow colors the sky over the Monterey Bay.

A rainbow is made during a process called refraction, where light bends inside ... you’ll see the reflection of the light in the form the optical phenomenon of the rainbow - but you won ...

But while the legend of treasure waiting at the end of a rainbow has been passed down for generations, science tells a different story—one just as fascinating, even if it doesn’t involve ...