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This is a list of sources of light, the visible part of the electromagnetic spectrum.
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* Astronomical objects
** Sun (
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Radioluminescence is light resulting from bombardment by ionizing radiation.
* Radium dial
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A CD spectrometer
Color spectrographs of common light sources {{DEFAULTSORT:Light Sources Technology-related lists Electronics lists
Light
Light, visible light, or visible radiation is electromagnetic radiation that can be visual perception, perceived by the human eye. Visible light spans the visible spectrum and is usually defined as having wavelengths in the range of 400– ...
sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that comes from them.
Incandescence
Incandescence is the emission of light from a hot body as a result of its temperature. * *
Combustion
Lamps
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Other
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Nuclear and high-energy particle
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* Astronomical objects
** Sun (sunlight
Sunlight is the portion of the electromagnetic radiation which is emitted by the Sun (i.e. solar radiation) and received by the Earth, in particular the visible spectrum, visible light perceptible to the human eye as well as invisible infrare ...
, solar radiation
Sunlight is the portion of the electromagnetic radiation which is emitted by the Sun (i.e. solar radiation) and received by the Earth, in particular the visible light perceptible to the human eye as well as invisible infrared (typically p ...
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**Star
A star is a luminous spheroid of plasma (physics), plasma held together by Self-gravitation, self-gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night sk ...
( Starlight)
*** Nova / supernova
A supernova (: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last stellar evolution, evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion ...
/ hypernova
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*Lightning
Lightning is a natural phenomenon consisting of electrostatic discharges occurring through the atmosphere between two electrically charged regions. One or both regions are within the atmosphere, with the second region sometimes occurring on ...
( Plasma)
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Luminescence
Luminescence is emission of light by a substance not resulting from heat.Bioluminescence
Bioluminescence is light resulting from biochemical reaction by a living organism. * * * * Cavitation bubbles made by mantis shrimps * * * * * * * *Cathodoluminescence
Cathodoluminescence is light resulting from a luminescent material being struck by electrons.Chemiluminescence
Chemiluminescence is light resulting from achemical reaction
A chemical reaction is a process that leads to the chemistry, chemical transformation of one set of chemical substances to another. When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an Gibbs free energy, ...
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Cryoluminescence
Cryoluminescence is the emission of light when an object is cooled.Crystalloluminescence
Crystalloluminescence is light produced during crystallization.Electric discharge (electrical energy)
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Electrochemiluminescence is light resulting from an electrochemical reaction.Electroluminescence
Electroluminescence is light resulting from an electric current being passed through a substance.
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Mechanoluminescence
Mechanoluminescence is light resulting from a mechanical action on a solid. * Triboluminescence, light generated when bonds in a material are broken when that material is scratched, crushed, or rubbed * Fractoluminescence, light generated when bonds in certain crystals are broken by fractures * Piezoluminescence, light produced by the action of pressure on certain solids * Sonoluminescence, light resulting from imploding bubbles in a liquid when excited by soundPhotoluminescence
Photoluminescence is light resulting from absorption of photons. *Fluorescence
Fluorescence is one of two kinds of photoluminescence, the emission of light by a substance that has absorbed light or other electromagnetic radiation. When exposed to ultraviolet radiation, many substances will glow (fluoresce) with colore ...
, the emission of light by a substance that has absorbed light or other electromagnetic radiation
* Phosphorescence, the delayed re-emission of light by substance that has absorbed it
Radioluminescence
Radioluminescence is light resulting from bombardment by ionizing radiation.
* Radium dial
*Tritium radioluminescence
Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light. Tritium emits electrons through beta decay and, when they interact with a phosphor material, light is emitted through the proces ...
Thermoluminescence
Thermoluminescence is light from the re-emission of absorbed energy when a substance is heated.See also
* List of reflected light sources * Luminous efficacy * Photometry (optics)References
/https://www.britannica.com*/External links
A CD spectrometer
Color spectrographs of common light sources {{DEFAULTSORT:Light Sources Technology-related lists Electronics lists