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This is a list of sources of light, the visible part of the electromagnetic spectrum. Light 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.
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Radioluminescence is light resulting from bombardment by ionizing radiation.
A CD spectrometer
Color spectrographs of common light sources {{DEFAULTSORT:Light Sources Technology-related lists Electronics lists
Incandescence
Incandescence is the emission of light from a hot body as a result of its temperature. * *
Combustion
Lamps
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Nuclear and high-energy particle
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*Astronomical object
An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists in the observable universe. In astronomy, the terms ''object'' and ''body'' are often us ...
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** Sun (sunlight
Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is scattered and filtered through Earth's atmosphere, and is obvious as daylight ...
, solar radiation)
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**Star
A star is an astronomical object comprising a luminous spheroid of plasma (physics), plasma held together by its gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked ...
(Starlight
Starlight is the light emitted by stars. It typically refers to visible electromagnetic radiation from stars other than the Sun, observable from Earth at night, although a component of starlight is observable from Earth during daytime.
Sunligh ...
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***Nova
A nova (plural novae or novas) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star (hence the name "nova", which is Latin for "new") that slowly fades over weeks or months. Causes of the dramati ...
/ supernova
A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event occurs during the last evolutionary stages of a massive star or when ...
/ hypernova
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* Lightning (Plasma
Plasma or plasm may refer to:
Science
* Plasma (physics), one of the four fundamental states of matter
* Plasma (mineral), a green translucent silica mineral
* Quark–gluon plasma, a state of matter in quantum chromodynamics
Biology
* Blood pla ...
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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 a chemical reaction.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
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
Triboluminescence is a phenomenon in which light is generated when a material is mechanically pulled apart, ripped, scratched, crushed, or rubbed (see tribology). The phenomenon is not fully understood, but appears to be caused by the separation a ...
, 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 sound
Photoluminescence
Photoluminescence is light resulting from absorption of photons. * Fluorescence, 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 itRadioluminescence
Radioluminescence is light resulting from bombardment by ionizing radiation.
Thermoluminescence
Thermoluminescence is light from the re-emission of absorbed energy when a substance is heated.See also
*List of reflected light sources
This is a list of reflected sources of light examples in contrast to the List of light sources. The list is oriented towards visible light reflection.
Celestial and atmospheric light
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See also
*Reflecti ...
* Luminous efficacy
* Photometry (optics)
References
External links
A CD spectrometer
Color spectrographs of common light sources {{DEFAULTSORT:Light Sources Technology-related lists Electronics lists