Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Scotophor> ?p ?o }
Showing triples 1 to 64 of
64
with 100 triples per page.
- Scotophor abstract "A scotophor is a material showing reversible darkening and bleaching when subjected to certain types of radiation. The name means dark bearer, in contrast to phosphor, which means light bearer. Scotophors show tenebrescence (reversible photochromism) and darken when subjected to an intense radiation such as sunlight. Minerals showing such behavior include hackmanite sodalite, spodumene and tugtupite. Some pure alkali halides also show such behavior.Scotophors can be sensitive to light, particle radiation (e.g. electron beam – see cathodochromism), X-rays, or other stimuli. The induced absorption bands in the material, caused by F-centers created by electron bombardment, can be returned to their non-absorbing state, usually by light and/or heating.Scotophors sensitive to electron beam radiation can be used instead of phosphors in cathode ray tubes, for creating a light absorbing instead of light emitting image. Such displays are viewable in bright light and the image is persistent, until erased.The image would be retained until erased by flooding the scotophor with a high-intensity infrared light or by electro-thermal heating. Using conventional deflection and raster formation circuity, a bi-level image could be created on the membrane and retained even when power was removed from the CRT.In Germany, scotophor tubes were developed by Telefunken as blauschrift-röhre (\"dark-trace tube\"). The heating mechanism was a layer of mica with transparent thin film of tungsten. When the image was to be erased, current was applied to the tungsten layer; even very dark images could be erased in 5–10 seconds.Scotophors typically require a higher-intensity electron beam to change color than phosphors need to emit light. Screens with layers of a scotophor and a phosphor are therefore possible, where the phosphor, flooded with a dedicated wide-beam low-intensity electron gun, produces backlight for the scotophor, and optionally highlights selected areas of the screen if bombarded with electrons with higher energy but still insufficient to penetrate the phosphor and change the scotophor state.The main application of scotophors was in plan position indicators, specialized military radar displays. The achievable brightness allowed projecting the image to a larger surface. The ability to quickly record a persistent trace found its use in some oscilloscopes.".
- Scotophor wikiPageID "26587782".
- Scotophor wikiPageLength "5788".
- Scotophor wikiPageOutDegree "49".
- Scotophor wikiPageRevisionID "701650989".
- Scotophor wikiPageWikiLink Absorption_band.
- Scotophor wikiPageWikiLink Alkali_metal_halide.
- Scotophor wikiPageWikiLink Backlight.
- Scotophor wikiPageWikiLink Category:Chromism.
- Scotophor wikiPageWikiLink Category:Display_technology.
- Scotophor wikiPageWikiLink Category:Optical_materials.
- Scotophor wikiPageWikiLink Category:Phosphors_and_scintillators.
- Scotophor wikiPageWikiLink Cathode_ray.
- Scotophor wikiPageWikiLink Cathode_ray_tube.
- Scotophor wikiPageWikiLink Cathodochromism.
- Scotophor wikiPageWikiLink Coulomb.
- Scotophor wikiPageWikiLink Direct-view_bistable_storage_tube.
- Scotophor wikiPageWikiLink Electron_gun.
- Scotophor wikiPageWikiLink F-Center.
- Scotophor wikiPageWikiLink Fluorescent_lamp.
- Scotophor wikiPageWikiLink Halide.
- Scotophor wikiPageWikiLink Infrared.
- Scotophor wikiPageWikiLink Light.
- Scotophor wikiPageWikiLink Magenta.
- Scotophor wikiPageWikiLink Mica.
- Scotophor wikiPageWikiLink Mineral.
- Scotophor wikiPageWikiLink Oscilloscope.
- Scotophor wikiPageWikiLink Particle_radiation.
- Scotophor wikiPageWikiLink Phosphor.
- Scotophor wikiPageWikiLink Photochromism.
- Scotophor wikiPageWikiLink Plan_position_indicator.
- Scotophor wikiPageWikiLink Potassium_bromide.
- Scotophor wikiPageWikiLink Potassium_chloride.
- Scotophor wikiPageWikiLink Radar.
- Scotophor wikiPageWikiLink Raster_scan.
- Scotophor wikiPageWikiLink Sodalite.
- Scotophor wikiPageWikiLink Sodium_chloride.
- Scotophor wikiPageWikiLink Solarisation.
- Scotophor wikiPageWikiLink Spodumene.
- Scotophor wikiPageWikiLink Sunlight.
- Scotophor wikiPageWikiLink Telefunken.
- Scotophor wikiPageWikiLink Tenebrescence.
- Scotophor wikiPageWikiLink Thin_film.
- Scotophor wikiPageWikiLink Tugtupite.
- Scotophor wikiPageWikiLink Tungsten.
- Scotophor wikiPageWikiLink X-ray.
- Scotophor wikiPageWikiLinkText "Scotophor".
- Scotophor wikiPageWikiLinkText "scotophor".
- Scotophor wikiPageUsesTemplate Template:Citation_needed.
- Scotophor wikiPageUsesTemplate Template:Reflist.
- Scotophor subject Category:Chromism.
- Scotophor subject Category:Display_technology.
- Scotophor subject Category:Optical_materials.
- Scotophor subject Category:Phosphors_and_scintillators.
- Scotophor hypernym Material.
- Scotophor type ChemicalCompound.
- Scotophor comment "A scotophor is a material showing reversible darkening and bleaching when subjected to certain types of radiation. The name means dark bearer, in contrast to phosphor, which means light bearer. Scotophors show tenebrescence (reversible photochromism) and darken when subjected to an intense radiation such as sunlight. Minerals showing such behavior include hackmanite sodalite, spodumene and tugtupite.".
- Scotophor label "Scotophor".
- Scotophor sameAs Q7435731.
- Scotophor sameAs m.0bh80z4.
- Scotophor sameAs Скотофор.
- Scotophor sameAs Q7435731.
- Scotophor wasDerivedFrom Scotophor?oldid=701650989.
- Scotophor isPrimaryTopicOf Scotophor.