light everywhere

Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context, the word is sometimes used to mean electromagnetic radiation of all wavelengths.[1] The elementary particle that defines light is the photon. The three basic dimensions of light (i.e., all electromagnetic radiation) are:Intensity, or alternatively amplitude, which is related to the perception of brightness of the light,Frequency, or alternatively wavelength, perceived by humans as the color of the light, andPolarization (angle of vibration), which is only weakly perceptible by humans under ordinary circumstances.Due to its wave–particle duality, light can exhibit properties of both waves and particles. The study of light, known as optics, is an important research area in modern physics.