Visible light is a form of electromagnetic (EM) radiation, as are radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves. Generally, visible light is defined as the wavelengths ...

Appearing as a whiteish yellow while overhead and redder when at the horizon, it's clear that the question "what color is the sun?" is actually more complex and difficult than it may initially sound.

Michael Murdoch is a member and former board member of the Inter-Society Color Council, part of the Color Literacy Project. People love the rainbow of ROYGBIV colors: red, orange, yellow, green, blue, ...

If you cast your mind back to school and can remember when your teacher shone light through a prism to create an artificial rainbow, then you'll probably already know the answer to this question. "The ...