LIGHT ENERGY

Light, also known as visible light, is electromagnetic radiation visible to the human eye.
Light, like all electromagnetic radiation, consists of photons. Photons have very specific properties, such as wavelength and frequency, and those observable properties determine the qualitative properties, such as color, that are perceived by the eye. Intensity is not a property of the photons, but rather their number.
Visible light makes up only a small portion of the electromagnetic spectrum. Types of electromagnetic radiation with higher energy than visible light include x-rays and ultraviolet light. Radio waves and infrared have lower energy.
Light exhibits behavior characteristic of both waves and particles. Until recently it was deemed impossible to detect both the particle nature and the wave nature of light at the same time, as they were believed to be two representations of the same phenomenon. This has in recent years been improved and the dual nature of light (wave and particle) has now solidly been proven in combined experiments.
The five behaviors of light can generally be classified as either particle or waveform behaviors. The particle-like behavior can be demonstrated photoelectrically and plasmonically, and the waveform-like behaviors include refraction, interference, diffraction, and reflection.