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- Optical_window abstract "The meaning of this term depends on the context: In astronomy, the optical window is the optical portion of the electromagnetic spectrum that passes through the atmosphere all the way to the ground. Most EM wavelengths are blocked by the atmosphere, so this is like a window that lets through only a narrow selection of what is out there, though the Sun is particularly active in the passed wavelengths. It is called \"optical\" because the wavelengths we can see are all in this range. The window runs from around 300 nanometers (ultraviolet-B) at the short end up into the range the eye can use, roughly 400-700 nm and continues up through the visual infrared to around 1100 nm, which is in the near-infrared range. There are also infrared and \"radio windows\" that transmit some infrared and radio waves. The radio window runs from about one centimeter to about eleven-meter waves. In medical physics, the optical window is the portion of the visible and infrared spectrum where living tissue absorbs relatively little light. This window runs approximately from 650 nm to 1200 nm. At shorter wavelengths light is strongly absorbed by hemoglobin in blood, while at longer wavelengths water strongly absorbs infrared light. In optics, it means a (usually at least mechanically flat, sometimes optically flat, depending on resolution requirements) piece of transparent (for a wavelength range of interest, not necessarily for visible light) optical material that allows light into an optical instrument. A window is usually parallel and is likely to be anti reflection coated, at least if it is designed for visible light. An optical window may be built into a piece of equipment (such as a vacuum chamber) to allow optical instruments to view inside that equipment.↑".
- Optical_window thumbnail Atmospheric_electromagnetic_opacity.svg?width=300.
- Optical_window wikiPageID "208572".
- Optical_window wikiPageLength "2767".
- Optical_window wikiPageOutDegree "22".
- Optical_window wikiPageRevisionID "699959906".
- Optical_window wikiPageWikiLink Anti-reflective_coating.
- Optical_window wikiPageWikiLink Astronomy.
- Optical_window wikiPageWikiLink Atmosphere_of_Earth.
- Optical_window wikiPageWikiLink Category:Electromagnetic_spectrum.
- Optical_window wikiPageWikiLink Electromagnetic_spectrum.
- Optical_window wikiPageWikiLink Float_glass.
- Optical_window wikiPageWikiLink Hemoglobin.
- Optical_window wikiPageWikiLink Infrared.
- Optical_window wikiPageWikiLink Infrared_window.
- Optical_window wikiPageWikiLink Medical_physics.
- Optical_window wikiPageWikiLink Nanometre.
- Optical_window wikiPageWikiLink Near-infrared_window_in_biological_tissue.
- Optical_window wikiPageWikiLink Optical_flat.
- Optical_window wikiPageWikiLink Optical_instrument.
- Optical_window wikiPageWikiLink Radio_wave.
- Optical_window wikiPageWikiLink Radio_window.
- Optical_window wikiPageWikiLink Ultraviolet.
- Optical_window wikiPageWikiLink Vacuum_chamber.
- Optical_window wikiPageWikiLink File:Atmospheric_electromagnetic_opacity.svg.
- Optical_window wikiPageWikiLinkText "Optical window".
- Optical_window wikiPageWikiLinkText "optical window".
- Optical_window wikiPageWikiLinkText "window".
- Optical_window wikiPageUsesTemplate Template:Refimprove.
- Optical_window wikiPageUsesTemplate Template:Reflist.
- Optical_window subject Category:Electromagnetic_spectrum.
- Optical_window hypernym Portion.
- Optical_window type AnatomicalStructure.
- Optical_window comment "The meaning of this term depends on the context: In astronomy, the optical window is the optical portion of the electromagnetic spectrum that passes through the atmosphere all the way to the ground. Most EM wavelengths are blocked by the atmosphere, so this is like a window that lets through only a narrow selection of what is out there, though the Sun is particularly active in the passed wavelengths. It is called \"optical\" because the wavelengths we can see are all in this range.".
- Optical_window label "Optical window".
- Optical_window sameAs Q3504012.
- Optical_window sameAs Jendela_optik.
- Optical_window sameAs 가시광창.
- Optical_window sameAs Optisk_vindauge.
- Optical_window sameAs Optisk_vindu.
- Optical_window sameAs Okno_optyczne.
- Optical_window sameAs Оптички_прозор.
- Optical_window sameAs Optiskt_fönster.
- Optical_window sameAs Q3504012.
- Optical_window wasDerivedFrom Optical_window?oldid=699959906.
- Optical_window depiction Atmospheric_electromagnetic_opacity.svg.
- Optical_window isPrimaryTopicOf Optical_window.