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radiation$66417$ - ترجمة إلى اليونانية
USED TO SOLVE THE HELMHOLTZ EQUATION
Sommerfield radiation condition; Radiation condition; Radiation conditions
radiation
n. ακτινοβολία, ραδιενέργεια, σκέδαση
electromagnetic waves
![opacity]]) of various [[wavelength]]s of electromagnetic radiation](https://commons.wikimedia.org/wiki/Special:FilePath/Atmospheric electromagnetic opacity.svg?width=200 "opacity]]) of various [[wavelength]]s of electromagnetic radiation")
![[[Electromagnetic spectrum]] with visible light highlighted](https://commons.wikimedia.org/wiki/Special:FilePath/EM spectrumrevised.png?width=200 "[[Electromagnetic spectrum]] with visible light highlighted")
![far field]] part of the electromagnetic field around a transmitter. A part of the "near-field" close to the transmitter, forms part of the changing [[electromagnetic field]], but does not count as electromagnetic radiation.](https://commons.wikimedia.org/wiki/Special:FilePath/FarNearFields-USP-4998112-1.svg?width=200 "far field]] part of the electromagnetic field around a transmitter. A part of the \"near-field\" close to the transmitter, forms part of the changing [[electromagnetic field]], but does not count as electromagnetic radiation.")
![[[James Clerk Maxwell]]](https://commons.wikimedia.org/wiki/Special:FilePath/James Clerk Maxwell sitting.jpg?width=200 "[[James Clerk Maxwell]]")
!['''Legend:'''<br />
γ = [[Gamma ray]]s<br />
<br />
HX = Hard [[X-ray]]s<br />
SX = Soft X-Rays<br />
<br />
EUV = Extreme-[[ultraviolet]]<br />
NUV = Near-ultraviolet<br />
<br />
[[Visible light]] (colored bands)<br />
<br />
NIR = Near-[[infrared]]<br />
MIR = Mid-infrared<br />
FIR = Far-infrared<br />
<br />
EHF = [[Extremely high frequency]] (microwaves)<br />
SHF = [[Super-high frequency]] (microwaves)<br />
<br />
UHF = [[Ultrahigh frequency]] (radio waves)<br />
VHF = [[Very high frequency]] (radio)<br />
HF = [[High frequency]] (radio)<br />
MF = [[Medium frequency]] (radio)<br />
LF = [[Low frequency]] (radio)<br />
VLF = [[Very low frequency]] (radio)<br />
VF = [[Voice frequency]]<br />
ULF = [[Ultra-low frequency]] (radio)<br />
SLF = [[Super-low frequency]] (radio)<br />
ELF = [[Extremely low frequency]] (radio)](https://commons.wikimedia.org/wiki/Special:FilePath/Light spectrum.svg?width=200 "'''Legend:'''<br />
γ = [[Gamma ray]]s<br />
<br />
HX = Hard [[X-ray]]s<br />
SX = Soft X-Rays<br />
<br />
EUV = Extreme-[[ultraviolet]]<br />
NUV = Near-ultraviolet<br />
<br />
[[Visible light]] (colored bands)<br />
<br />
NIR = Near-[[infrared]]<br />
MIR = Mid-infrared<br />
FIR = Far-infrared<br />
<br />
EHF = [[Extremely high frequency]] (microwaves)<br />
SHF = [[Super-high frequency]] (microwaves)<br />
<br />
UHF = [[Ultrahigh frequency]] (radio waves)<br />
VHF = [[Very high frequency]] (radio)<br />
HF = [[High frequency]] (radio)<br />
MF = [[Medium frequency]] (radio)<br />
LF = [[Low frequency]] (radio)<br />
VLF = [[Very low frequency]] (radio)<br />
VF = [[Voice frequency]]<br />
ULF = [[Ultra-low frequency]] (radio)<br />
SLF = [[Super-low frequency]] (radio)<br />
ELF = [[Extremely low frequency]] (radio)")
![light]] (blue, green, and red) with a distance scale in micrometers along the x-axis.](https://commons.wikimedia.org/wiki/Special:FilePath/VisibleEmrWavelengths.svg?width=200 "light]] (blue, green, and red) with a distance scale in micrometers along the x-axis.")
FORM OF ENERGY EMITTED AND ABSORBED BY PARTICLES WHICH ARE CHARGED WHICH SHOWS WAVE-LIKE BEHAVIOR AS IT TRAVELS THROUGH SPACE
Electromagnectic radiation; Electromagnetic wave; Light wave; Electromagnetic waves; EM radiation; E.M. radiation; E. M. radiation; RF radiation; Electro-magnetic radiation; Magnetoelectric wave; Theory of radiation; Electromagnetic Radiation; Radiation emission; Radiation emissions; Em wave; EM wave; EM Waves; E-M Waves; Em waves; Electronic smog; Electromagnetic Wave; Electromagnetic wave theory; Electro magnetic waves; Emag waves; Electrical smog; Electromagnetic resonance; Electromagnetic Waves; Electro magnetic energy; Electromagnetic emission; Electromagnetic emissions; Photon radiation; Electromagnetic signal; E/M wave
ηλεκτρομαγνητικά κύματα
ultraviolet rays
![Ultraviolet photons harm the [[DNA]] molecules of living organisms in different ways. In one common damage event, adjacent [[thymine]] bases bond with each other, instead of across the "ladder". This "[[thymine dimer]]" makes a bulge, and the distorted DNA molecule does not function properly.](https://commons.wikimedia.org/wiki/Special:FilePath/DNA UV mutation.svg?width=200 "Ultraviolet photons harm the [[DNA]] molecules of living organisms in different ways. In one common damage event, adjacent [[thymine]] bases bond with each other, instead of across the \"ladder\". This \"[[thymine dimer]]\" makes a bulge, and the distorted DNA molecule does not function properly.")
![Sunburn effect (as measured by the [[UV index]]) is the product of the sunlight spectrum (radiation intensity) and the erythemal action spectrum (skin sensitivity) across the range of UV wavelengths. Sunburn production per milliwatt of radiation intensity is increased by nearly a factor of 100 between the near UV‑B wavelengths of 315–295 nm](https://commons.wikimedia.org/wiki/Special:FilePath/Erythemal action spectrum.svg?width=200 "Sunburn effect (as measured by the [[UV index]]) is the product of the sunlight spectrum (radiation intensity) and the erythemal action spectrum (skin sensitivity) across the range of UV wavelengths. Sunburn production per milliwatt of radiation intensity is increased by nearly a factor of 100 between the near UV‑B wavelengths of 315–295 nm")
![UV damaged [[polypropylene]] rope (left) and new rope (right)](https://commons.wikimedia.org/wiki/Special:FilePath/Failedrope1.jpg?width=200 "UV damaged [[polypropylene]] rope (left) and new rope (right)")
![IR spectrum showing carbonyl absorption due to UV degradation of [[polyethylene]]](https://commons.wikimedia.org/wiki/Special:FilePath/Irspec2.jpg?width=200 "IR spectrum showing carbonyl absorption due to UV degradation of [[polyethylene]]")
![Aurora at [[Jupiter]]'s north pole as seen in ultraviolet light by the [[Hubble Space Telescope]].](https://commons.wikimedia.org/wiki/Special:FilePath/Jupiter.Aurora.HST.UV.jpg?width=200 "Aurora at [[Jupiter]]'s north pole as seen in ultraviolet light by the [[Hubble Space Telescope]].")
![DU/km]]) and blocking of different bands of ultraviolet radiation: In essence, all UVC is blocked by diatomic oxygen (100–200 nm) or by ozone (triatomic oxygen) (200–280 nm) in the atmosphere. The ozone layer then blocks most UVB. Meanwhile, UVA is hardly affected by ozone, and most of it reaches the ground. UVA makes up almost all UV light that penetrates the Earth's atmosphere.](https://commons.wikimedia.org/wiki/Special:FilePath/Ozone altitude UV graph.svg?width=200 "DU/km]]) and blocking of different bands of ultraviolet radiation: In essence, all UVC is blocked by diatomic oxygen (100–200 nm) or by ozone (triatomic oxygen) (200–280 nm) in the atmosphere. The ozone layer then blocks most UVB. Meanwhile, UVA is hardly affected by ozone, and most of it reaches the ground. UVA makes up almost all UV light that penetrates the Earth's atmosphere.")
![sterilizing]] microbiological contaminants from irradiated surfaces.](https://commons.wikimedia.org/wiki/Special:FilePath/UV-ontsmetting laminaire-vloeikast.JPG?width=200 "sterilizing]] microbiological contaminants from irradiated surfaces.")
![After a training exercise involving fake [[body fluids]], a healthcare worker's [[personal protective equipment]] is checked with ultraviolet light to find invisible drops of fluids. These fluids could contain deadly viruses or other contamination.](https://commons.wikimedia.org/wiki/Special:FilePath/Ultra-violet screening for potentially Ebola-carrying liquids (15811190376).jpg?width=200 "After a training exercise involving fake [[body fluids]], a healthcare worker's [[personal protective equipment]] is checked with ultraviolet light to find invisible drops of fluids. These fluids could contain deadly viruses or other contamination.")
FORM OF ELECTROMAGNETIC RADIATION
Ultra-violet radiation; Ultraviolet radiation; UV; Ultraviolet energy; Ultraviolet light; UV-A; UV-C; UV-B; UVB; UV radiation; Uv; Ultra-violet; Ultraviolet Light; Ultraviolet Rays; Ultraviolet Radiation; UV Radiation; Uv light; UV light; Near ultraviolet; Near UV; UVB radiation; UVA radiation; UV Light; Ultraviolet light absorber; Ultraviolet radiation (biology); Ultra violet; Ultraviolet lamp; Deep ultraviolet; Vacuum UV; Vacuum ultraviolet; Deep UV; Ultraviolet A; Ultraviolet a; Ultraviolet B; Ultraviolet b; Ultraviolet C; Ultraviolet c; Ultra-Violet; UV rays; Ultraviolet Light Absorber; Ultraviolet irradiation; Near-ultraviolet; Ultra-violet light; UV A; UV B; Bee's purple; Ultraviolet ray; UV-light; Ultraviolet-B; UV ray; Ultraviolet rays; UVA blocker; UV-radiation; Far-ultraviolet; Ultraviolet lighting; UV lamp; UV lamps; Far ultraviolet; Uv-B; Ultraviolet Lamp; Ultraviolet waves; Diurnal variation of ultraviolet light; Diurnal variation of ultaviolet light; UV protection; Ultraviolet a radiation; Ultraviolet b radiation; Ultraviolet c radiation; Ultraviolet type; U.V.; Thitonic rays; Chemical rays; UV light irradiation; NUV photons; VUV radition; VUV radiation; Pulsed ultraviolet light; UVR; Vaccum ultraviolet; Ultraviolet LED; Ultraviolet LEDs; UV-irradiation; Ultra violet rays; Hard ultraviolet; UV photon; Middle ultraviolet; Ultra violet light; Oxidizing rays; Tithonic rays; Hard UV; Soft ultraviolet; Soft UV; Dorno radiation; Middle UV; Far UV; UV C; Ultraviolet-A; Ultraviolet-C; H Lyman-α; Hydrogen Lyman-alpha; Hydrogen Lyman-alpha ultraviolet; H Lyman-α ultraviolet; Hydrogen Lyman-alpha radiation; H Lyman-α radiation; Far UV-C; Far UVC; UVB (radiation); UVA (radiation); UVC (radiation); NUV (radiation); MUV (radiation); FUV (radiation); VUV (radiation); Far-UVC; Far-UVC light; Far UV-C light; Dark tithonic rays; De-oxidizing rays; Deoxidizing rays; De-oxidising rays; Deoxidising rays; De-oxidierende Strahlen; Oxidising rays; Ultraviolet spectrum
υπεριώδεις ακτίνες
تعريف
synchrotron radiation
¦ noun Physics polarized radiation emitted by a charged particle spinning in a magnetic field.
ويكيبيديا
Sommerfeld radiation condition
In applied mathematics, the Sommerfeld radiation condition is a concept from theory of differential equations and scattering theory used for choosing a particular solution to the Helmholtz equation. It was introduced by Arnold Sommerfeld in 1912 and is closely related to the limiting absorption principle (1905) and the limiting amplitude principle (1948).
