Light

Definition

Light is a type of energy known as electromagnetic radiation that is visible to the human eye. It travels in waves and can move through empty space.

Related terms

Wavelength:

This refers to the distance between one peak or crest of a wave of light, heat, or other energy and the next corresponding peak or crest.

Photon:

A photon is a particle representing a quantum of light or other electromagnetic radiation. It carries energy proportional to the radiation frequency but has zero rest mass.

Spectrum: In terms of light, spectrum refers to the range of all possible frequencies of electromagnetic radiation.