EPL; Esoteric Principles of Light

These basic qualities of light are; INTENSITY, FORM, COLOR, DIRECTION and MOVEMENT.

Light is a form of electromagnetic radiation with a wavelength which can be detected by the human eye. ... Light is electromagnetic radiation that shows properties of both waves and particles. Light is a form of energy. Light also keeps the Earth warm. Light exists in tiny energy packets called photons.

https://simple.m.wikipedia.org/wiki/Light

https://finedesignassociates.com/resources/qualities-of-light/