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Monochromatic radiation information


In physics, monochromatic radiation is electromagnetic radiation with a single constant frequency or wavelength.[1] When that frequency is part of the visible spectrum (or near it) the term monochromatic light is often used. Monochromatic light is perceived by the human eye as a spectral color.

When monochromatic radiation propagates through vacuum or a homogeneous transparent medium, it remains with a single constant frequency or wavelength; otherwise, it suffers refraction.

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Monochromatic radiation

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In physics, monochromatic radiation is electromagnetic radiation with a single constant frequency or wavelength. When that frequency is part of the visible...

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Monochrome

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black-and-white (typically analog). In physics, monochromatic light refers to electromagnetic radiation that contains a narrow band of wavelengths, which...

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Electromagnetic radiation

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be expressed by Fourier analysis in terms of sinusoidal waves (monochromatic radiation), which in turn can each be classified into these regions of the...

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Sinusoidal plane wave

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some fixed plane. It is also called a monochromatic plane wave, with constant frequency (as in monochromatic radiation). For any position x → {\displaystyle...

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Sine wave

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physics, including wind waves, sound waves, and light waves, such as monochromatic radiation. In engineering, signal processing, and mathematics, Fourier analysis...

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Candela

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by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency 540×1012 Hz, Kcd, to be 683 when expressed in the...

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Ultraviolet

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electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight...

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SI base unit

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by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency 540×1012 Hz, Kcd, to be 683 when expressed in the...

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List of conversion factors

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information entropy, luminous intensity, luminance, luminous flux, illuminance, radiation. Notes: See Weight for detail of mass/weight distinction and conversion...

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Scale of temperature

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resistance thermometers (known as SPRTs, PRTs or Platinum RTDs) and monochromatic radiation thermometers. Although the Kelvin and Celsius scales are defined...

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2019 redefinition of the SI base units

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ΔνCs is exactly 9192631770 hertz (Hz); The luminous efficacy of monochromatic radiation of frequency 5.40×1014 Hz (540 THz) – a frequency of green-colored...

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Thermal radiation

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its spectral emissivity, as expressed by Kirchhoff's law. The radiation is not monochromatic, i.e., it does not consist of only a single frequency, but comprises...

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International System of Units

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luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 5.4×1014 hertz and that has a radiant intensity in...

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Metrology

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has broadened to include electrical and photometric units and ionizing radiation measurement standards. The metric system was modernised in 1960 with the...

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Historical definitions of the SI base units

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radionuclide", the gray (symbol Gy) for ionising radiation, the sievert (symbol Sv) as the unit of dose equivalent radiation, and the katal (symbol kat) for catalytic...

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Brightness temperature

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{\displaystyle T_{b}={\frac {I_{\lambda }\lambda ^{4}}{2kc}}} For almost monochromatic radiation, the brightness temperature can be expressed by the radiance I...

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Luminous efficacy

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efficacy of radiation reaches a maximum of 1700 lm/W for monochromatic light at a wavelength of 507 nm. Luminous efficacy (of radiation), denoted K,...

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Radiation pressure

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Radiation pressure (also known as light pressure) is mechanical pressure exerted upon a surface due to the exchange of momentum between the object and...

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Laser

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produce radiation in several modes with slightly different wavelengths. Although temporal coherence implies some degree of monochromaticity, some lasers...

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Wave

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physics, including wind waves, sound waves, and light waves, such as monochromatic radiation. In engineering, signal processing, and mathematics, Fourier analysis...

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Monochromatic electromagnetic plane wave

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In general relativity, the monochromatic electromagnetic plane wave spacetime is the analog of the monochromatic plane waves known from Maxwell's theory...

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Diffuse sky radiation

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Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by molecules or particulates...

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Photosynthetically active radiation

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Photosynthetically active radiation (PAR) designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms...

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Discrete ordinates method

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working on radiative transfer. In the case of time-independent monochromatic radiation in an elastically scattering medium, the RTE is s ⋅ ∇ I ( r , s...

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Monochromator

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the Latin suffix -ator, denoting an agent. A device that can produce monochromatic light has many uses in science and in optics because many optical characteristics...

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International Temperature Scale of 1990

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standard platinum resistance thermometers (known as SPRTs) and monochromatic radiation thermometers. Although the Kelvin and Celsius temperature scales...

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