When it comes to the vexing problem of red or any other gradient, when we both agree that a thing is some color, is it really ...

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.

Can rainbows form in a circle? – Henry D., age 7, Cambridge, Massachusetts The legend goes that there is a pot of gold hidden ...

“I learned that if there was an oil spill on the road, you could see all of these colors of the rainbow because of interference. So I decided that if physics could explain all of these things, I would ...

Newton was also the first to understand the rainbow, and to refract white light ... which he applied to general physics. His basic system, developed simultaneously – but independently ...