is light radiation energy
Radiant energy is the energy of electromagnetic waves. The term is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also used less frequently in other fields (such as telecommunications).
White light, for example, is a form of radiant energy, and its frequency forms a tiny bit of the entire electromagnetic spectrum. In the illustration above, you will see the different radiant energy levels represented by their wavelengths.