Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps Its carrier particle is the photon With the development of electric lights and power systems, electric lighting has effectively replaced firelight.
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Light is electromagnetic radiation that can be detected by the human eye
Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10 −11 metres to radio waves measured in metres. The meaning of light is something that makes vision possible How to use light in a sentence Light is a transverse, electromagnetic wave that can be seen by the typical human
The wave nature of light was first illustrated through experiments on diffraction and interference. In most situations, light behaves like a wave with properties like wavelength and frequency, and is subject to diffraction and interference In some situations, light can be considered to behave like a particle called a photon This particle has no mass, but carries a fixed amount of energy.
But what exactly is light
In his formulation of electromagnetism, maxwell described light as a propagating wave of electric and magnetic fields More generally, he predicted the existence of electromagnetic radiation Coupled electric and magnetic fields traveling as waves at a speed equal to the known speed of light. Light makes up a part of both the electromagnetic spectrum and radiation given by stars, like the sun
The light that comes from the sun reaches the earth and makes it bright Rainbows are a type of light and stars are a type of light to The study of light is known as optics When light hits an opaque object, it makes a.
