The atmospheric phenomenon, technically known as a circumhorizontal arc, only occurs at precise locations under specific conditions.

Rainbows may be a trick of the eye, but they’re also based in fascinating optical physics. Here's how they work and why we see them.

A rainbow is a spectrum of visible light ... A scientific tool that can do the same thing is called a spectroscope (early spectroscopes used prisms). You can make your own spectroscope by following ...

We know the effect of passing white light through a prism and seeing the color spectrum that comes out of the other side. It will not be noticeable to the naked eye, but that rainbow does not ...

A rainbow contains all the colours of the visible spectrum. It is often possible ... Light is refracted when it enters the prism, and each colour is refracted by a different amount.

It is usually stated that Newton was the first to distinguish seven colours in the prismatic spectrum, but Maurolycus (1575) in the explanation which he gave of the circular arc of the rainbow ...