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Biological effects of high-energy visible light
...characterized by shorter wavelengths and higher energy than other visible light, and is often associated with potential biological effects. ...ers to the fact that light at shorter wavelengths carries more energy than light at longer wavelengths.

2 KB (353 words) - 16:47, 5 March 2024

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EMR
...cludes radio waves, microwaves, infrared light, visible light, ultraviolet light, x-rays, and gamma rays. Also called electromagnetic radiation.

384 bytes (53 words) - 08:51, 5 April 2024
Electromagnetic spectrum
...g wavelengths. Electromagnetic energy passes through space at the speed of light in a manner similar to the way that a wave's energy travels through water. ...e common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.

2 KB (270 words) - 19:32, 22 February 2024
Biological effects of high-energy visible light
...characterized by shorter wavelengths and higher energy than other visible light, and is often associated with potential biological effects. ...ers to the fact that light at shorter wavelengths carries more energy than light at longer wavelengths.

2 KB (353 words) - 16:47, 5 March 2024
Electromagnetic radiation
..., X-rays and gamma rays. Sunlight is also a form of EM energy, but visible light is only a small portion of the EM spectrum, which contains a broad range of .... We call this the speed of light. Nothing can go faster than the speed of light.

2 KB (315 words) - 20:57, 22 February 2024
Luminous efficacy
...isible light. It is defined as the ratio of the luminous flux emitted by a light source to the electrical power consumed by it. Luminous efficacy is typical ...easured in watts (W). The resulting value represents the amount of visible light produced per unit of electrical power consumed.

4 KB (542 words) - 14:42, 22 January 2024
Photochemistry
...ur in the presence of light, but it also includes the chemical reaction of light, which is known as [[Photophysics|photophysics]]. ...pectrum]]. A molecule, or small atomic particle, will absorb a quantity of light and jump to a high energy state. The energy absorbed can result in the brea

2 KB (249 words) - 18:00, 25 February 2024
Scintillator
...ays and gamma rays, and re-emit the absorbed energy in the form of visible light. This property makes scintillators crucial for converting invisible radiati ...omography]] (CT) and [[positron emission tomography]] (PET), as well as in high-energy physics and industrial applications.

4 KB (493 words) - 10:56, 22 March 2024
Lumen (unit)
[[File:V-LIGHT_A314.JPG|V-LIGHT A314|thumb]] '''Lumen (unit)''' ...unit]] of [[luminous flux]], a measure of the total quantity of [[visible light]] emitted by a source per unit of time. Luminous flux differs from power ([

3 KB (504 words) - 05:42, 16 April 2024
Non-ionizing
...] radiation. High frequency radiation includes ultraviolet (UV) radiation, light, and radio waves, while low frequency radiation includes extremely low freq [[High frequency radiation]] includes [[ultraviolet radiation]], visible light, and [[radio waves]]. Ultraviolet radiation is emitted by the Sun and artif

2 KB (267 words) - 22:40, 25 February 2024
Photostimulated luminescence
...hosphorescence]] in terms of the mechanism and the duration of the emitted light. PSL has significant applications in various fields, including [[medical im ...and recombine, emitting light in the process. The intensity of the emitted light is proportional to the amount of stored energy, making PSL useful for quant

4 KB (501 words) - 04:04, 22 March 2024
Ruby laser
The Ruby laser is a type of solid-state laser that operates in the visible spectrum. It was the first successful laser ever constructed, invented by T ...ists had been working on various methods to achieve stimulated emission of light. However, it was Maiman who successfully demonstrated the first working las

2 KB (302 words) - 14:53, 22 January 2024
Phosphor
..., where the emission of light ceases almost immediately after the external light source is removed, phosphorescent materials continue to glow for some time. ...y converting part of the blue light into green and red light, resulting in light that appears white to the human eye.

3 KB (469 words) - 08:10, 22 April 2024
Deoxyribodipyrimidine photo-lyase
...[[enzyme]] that repairs [[DNA]] damage caused by exposure to [[ultraviolet light]]. This enzyme is part of the [[nucleotide excision repair]] pathway, which ...ne]] bases in DNA that have become cross-linked by exposure to ultraviolet light. This type of DNA damage, known as a [[pyrimidine dimer]], distorts the DNA

2 KB (229 words) - 22:45, 3 March 2024
Radiation
...occur in various forms, ranging from electromagnetic radiation, including light, X-rays, and ultraviolet (UV) radiation, to particle radiation such as alph ...atoms or molecules. Examples include microwaves, radio waves, and visible light.

4 KB (638 words) - 15:37, 14 March 2024
Mercury-vapor lamp
...with a luminous efficacy of 35 to 65 lumens/watt. They emit a bluish-green light that is not very flattering to human skin color, but they are used in large ...introduction of phosphor-coated lamps, which emitted a more pleasant white light.

3 KB (480 words) - 07:11, 19 March 2024
Sunglasses
...designed primarily to prevent [[bright sunlight]] and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function a ...to Roman times when emperors would watch gladiator fights through polished light emerald green gems to reduce glare. The modern form of sunglasses came into

2 KB (259 words) - 18:50, 25 February 2024
Gamma ray
...cluding [[nuclear reactions]], [[radioactive decay]], and certain types of high-energy particle interactions. Gamma rays can also be produced by certain types of high-energy particle interactions, such as those that occur in [[particle accelerators]

3 KB (423 words) - 08:05, 23 February 2024
Photochemical reaction
...ated by the absorption of [[light]], typically ultraviolet (UV) or visible light. These reactions are fundamental in nature, playing a crucial role in proce ...same temperature. The primary steps in a photochemical reaction include [[light absorption]], excitation, and subsequent reaction processes such as energy

3 KB (388 words) - 05:42, 27 March 2024
Gallium phosphide
.... It is an important material used in the manufacture of devices such as [[light-emitting diodes]] (LEDs), [[semiconductor lasers]], and [[photodetectors]]. ...s a bandgap of 2.26 eV at room temperature, making it suitable for visible light emission in the green spectrum. GaP is also known for its high thermal cond

3 KB (407 words) - 09:23, 19 March 2024
Photopolymer
'''Photopolymerization''' is a process in which [[light energy]] is used to initiate a [[chemical reaction]] that generates a [[pol ...when a photoinitiator absorbs light, typically in the ultraviolet (UV) or visible spectrum, and undergoes a chemical change that initiates polymerization. In

3 KB (407 words) - 10:54, 22 March 2024