Saturation describes the neutrality of a color; a red object with little or no white is said to be very saturated. The lightness of a color tells us about its relative ordering on the dark-to ...

A large metallic ring suspected to be debris from space crashed in southern Kenya’s Mukuku village this week, the country’s space agency said. Kenyan officials said Wednesday they were ...

You may have heard of these wavelengths shortened to ROYGBIV, which stands for red, orange, yellow, green, blue, indigo, and violet. A red object looks red because it reflects the red wavelength of ...