The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see. When sunlight hits ...

A: Light from the sun comes in many colors, including colors we can see and some we can’t see. And just like sound waves or waves on the water, light travels in waves. Each color has a different kind ...

Blueberries owe their striking color not to blue pigments, but to microscopic structures in their waxy coating that scatter blue and ultraviolet light. This natural “optical trick” could inspire ...