Light
Electromagnetic radiation refers to waves of electric and magnetic fields that can travel through space without needing any medium. It includes various forms such as radio waves, microwaves, visible light, X-rays, and gamma rays.
A particle of light that carries energy and behaves both as a wave and a particle.
Frequency Spectrum: The range of frequencies or wavelengths that make up the electromagnetic spectrum.
The process by which matter takes in electromagnetic radiation, converting it into other forms of energy.