ultraviolet sources

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• ULTRAVIOLET — L’ultraviolet est le domaine des radiations électromagnétiques s’étendant depuis la limite violette du spectre visible (400 nm) jusqu’à la région des rayons X mous, qu’il recouvre partiellement (cf. figure). Cette délimitation repose… …   Encyclopédie Universelle

• Ultraviolet photography — is a photographic process of recording images by using light from the ultraviolet (UV) spectrum only.OverviewLight which is visible to the human eye covers the spectral region from about 400 to 750 nanometers. This is the radiation spectrum used… …   Wikipedia

• Ultraviolet photoelectron spectroscopy — (UPS) refers to the measurement of kinetic energy spectra of photoelectrons emitted by ultraviolet photons, to determine molecular energy levels in the valence region.If Einstein’s photoelectric law is applied to a free molecule, the kinetic… …   Wikipedia

• Ultraviolet-sensitive bead — Ultraviolet sensitive beads were developed to react to ultraviolet rays, from the Sun or artificial sources. These beads are white or transparent when they re not exposed to UV rays. They do not react with visible light. When exposed to UV rays,… …   Wikipedia

• Ultraviolet — UV redirects here. For other uses, see UV (disambiguation). UVB redirects here. For the mysterious shortwave radio station in Russia, see UVB 76. For other uses, see Ultraviolet (disambiguation). False color image of the Sun s corona as seen in… …   Wikipedia

• Ultraviolet–visible spectroscopy — Beckman DU640 UV/Vis spectrophotometer. Ultraviolet visible spectroscopy or ultraviolet visible spectrophotometry (UV Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet visible spectral region. This… …   Wikipedia

• Ultraviolet (film) — Infobox Film name = UltraViolet caption = Promotional poster for the film UltraViolet director = Kurt Wimmer writer = Kurt Wimmer starring = Milla Jovovich Cameron Bright Nick Chinlund producer = John Baldecchi Lucas Foster Tony Mark (Executive)… …   Wikipedia

• ultraviolet astronomy — Study of astronomical objects and phenomena by observing the ultraviolet radiation (UV radiation) they emit. It has yielded much information about chemical abundances and processes in interstellar matter, the Sun, and other stellar objects, such… …   Universalium

• Extreme Ultraviolet Explorer — Infobox Spacecraft Name = Extreme Ultraviolet Explorer Caption = The Extreme Ultraviolet Explorer spacecraft Organization = NASA Major Contractors = Mission Type = Atmospheric observation using UV telescope Satellite Of = Earth Orbital Insertion… …   Wikipedia

• Extreme ultraviolet lithography — (also known as EUV or EUVL ) is a next generation lithography technology using the 13.5 nm EUV wavelength. EUVL opticsEUVL is a significant departure from the deep ultraviolet lithography used today. All matter absorbs EUV radiation. Hence, EUV… …   Wikipedia

• Extreme ultraviolet — Extreme Ultra Violet radiation (EUV) is generally considered to be the part of the electromagnetic spectrum spanning from 120 nm down to 10 nm. Its main uses are photoelectron spectroscopy, solar imaging, and lithography. EUV is naturally… …   Wikipedia