Corals may lack eyes, but they are far from blind. These delicate animals sense light in ways that continue to amaze and ...

Measuring Visible Light How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic ...

Light pollution reduction (LPR) filters work because many outdoor lighting sources do not shine evenly across the visible spectrum. Instead, they emit radiation at only a few distinct wavelengths.

Sunscreens work in two ways: either by blocking harmful UV rays from reaching the skin, or by converting the rays into heat that can be released from the body.

High-energy UV light can kill mold, but it isn't the magic bullet you might think it is. Our experts explain.