Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Thermionic_emission> ?p ?o }
- Thermionic_emission abstract "Thermionic emission is the thermally induced flow of charge carriers from a surface or over a potential-energy barrier. This occurs because the thermal energy given to the carrier overcomes the work function of the material. The charge carriers can be electrons or ions, and in older literature are sometimes referred to as \"thermions\". After emission, a charge that is equal in magnitude and opposite in sign to the total charge emitted is initially left behind in the emitting region. But if the emitter is connected to a battery, the charge left behind is neutralized by charge supplied by the battery as the emitted charge carriers move away from the emitter, and finally the emitter will be in the same state as it was before emission.The classical example of thermionic emission is the emission of electrons from a hot cathode into a vacuum (also known as thermal electron emission or the Edison effect) in a vacuum tube. The hot cathode can be a metal filament, a coated metal filament, or a separate structure of metal or carbides or borides of transition metals. Vacuum emission from metals tends to become significant only for temperatures over 1,000 K (730 °C; 1,340 °F). The science dealing with this phenomenon has been known as \"thermionics\", but this name seems to be gradually falling into disuse.The term \"thermionic emission\" is now also used to refer to any thermally-excited charge emission process, even when the charge is emitted from one solid-state region into another. This process is crucially important in the operation of a variety of electronic devices and can be used for electricity generation (such as thermionic converters and electrodynamic tethers) or cooling. The magnitude of the charge flow increases dramatically with increasing temperature.".
- Thermionic_emission thumbnail Thermionic_filament.jpg?width=300.
- Thermionic_emission wikiPageExternalLink tubes201.
- Thermionic_emission wikiPageExternalLink richardson-lecture.pdf.
- Thermionic_emission wikiPageExternalLink thermionic.pdf.
- Thermionic_emission wikiPageID "215226".
- Thermionic_emission wikiPageLength "27119".
- Thermionic_emission wikiPageOutDegree "75".
- Thermionic_emission wikiPageRevisionID "697892136".
- Thermionic_emission wikiPageWikiLink Arnold_Sommerfeld.
- Thermionic_emission wikiPageWikiLink Arrhenius_equation.
- Thermionic_emission wikiPageWikiLink Atom.
- Thermionic_emission wikiPageWikiLink Boltzmann_constant.
- Thermionic_emission wikiPageWikiLink Category:Atomic_physics.
- Thermionic_emission wikiPageWikiLink Category:Electricity.
- Thermionic_emission wikiPageWikiLink Category:Energy_conversion.
- Thermionic_emission wikiPageWikiLink Category:Thomas_Edison.
- Thermionic_emission wikiPageWikiLink Category:Vacuum_tubes.
- Thermionic_emission wikiPageWikiLink Cathode_ray_tube.
- Thermionic_emission wikiPageWikiLink Charge_carrier.
- Thermionic_emission wikiPageWikiLink Current_density.
- Thermionic_emission wikiPageWikiLink Diode.
- Thermionic_emission wikiPageWikiLink Electricity_generation.
- Thermionic_emission wikiPageWikiLink Electrodynamic_tether.
- Thermionic_emission wikiPageWikiLink Electron.
- Thermionic_emission wikiPageWikiLink Electron_gun.
- Thermionic_emission wikiPageWikiLink Electronic_band_structure.
- Thermionic_emission wikiPageWikiLink Electronvolt.
- Thermionic_emission wikiPageWikiLink Eugen_Goldstein.
- Thermionic_emission wikiPageWikiLink Field_electron_emission.
- Thermionic_emission wikiPageWikiLink Fluorescent_lamp.
- Thermionic_emission wikiPageWikiLink Frederick_Guthrie.
- Thermionic_emission wikiPageWikiLink Gallium_arsenide.
- Thermionic_emission wikiPageWikiLink Gallium_nitride.
- Thermionic_emission wikiPageWikiLink Galvanometer.
- Thermionic_emission wikiPageWikiLink Graphene.
- Thermionic_emission wikiPageWikiLink Hans_Friedrich_Geitel.
- Thermionic_emission wikiPageWikiLink Heat_engine.
- Thermionic_emission wikiPageWikiLink Hot_cathode.
- Thermionic_emission wikiPageWikiLink Incandescent_light_bulb.
- Thermionic_emission wikiPageWikiLink International_Electrical_Exposition.
- Thermionic_emission wikiPageWikiLink Ion.
- Thermionic_emission wikiPageWikiLink J._J._Thomson.
- Thermionic_emission wikiPageWikiLink Johann_Wilhelm_Hittorf.
- Thermionic_emission wikiPageWikiLink John_Ambrose_Fleming.
- Thermionic_emission wikiPageWikiLink Julius_Elster.
- Thermionic_emission wikiPageWikiLink Lothar_Wolfgang_Nordheim.
- Thermionic_emission wikiPageWikiLink Miller_index.
- Thermionic_emission wikiPageWikiLink Nobel_Prize_in_Physics.
- Thermionic_emission wikiPageWikiLink Owen_Willans_Richardson.
- Thermionic_emission wikiPageWikiLink Parabolic_reflector.
- Thermionic_emission wikiPageWikiLink Permittivity.
- Thermionic_emission wikiPageWikiLink Planck_constant.
- Thermionic_emission wikiPageWikiLink Ralph_H._Fowler.
- Thermionic_emission wikiPageWikiLink Rydberg_matter.
- Thermionic_emission wikiPageWikiLink Saul_Dushman.
- Thermionic_emission wikiPageWikiLink Solar_cell.
- Thermionic_emission wikiPageWikiLink Solid-state_physics.
- Thermionic_emission wikiPageWikiLink Space_charge.
- Thermionic_emission wikiPageWikiLink Stanford_University.
- Thermionic_emission wikiPageWikiLink Thermionic_converter.
- Thermionic_emission wikiPageWikiLink Thermoelectric_effect.
- Thermionic_emission wikiPageWikiLink Thomas_Edison.
- Thermionic_emission wikiPageWikiLink Vacuum_tube.
- Thermionic_emission wikiPageWikiLink Walter_H._Schottky.
- Thermionic_emission wikiPageWikiLink William_Henry_Preece.
- Thermionic_emission wikiPageWikiLink Work_function.
- Thermionic_emission wikiPageWikiLink X-ray_tube.
- Thermionic_emission wikiPageWikiLink File:EdisonEffect.svg.
- Thermionic_emission wikiPageWikiLink File:Edison_light_bulb_with_plate.jpg.
- Thermionic_emission wikiPageWikiLink File:Thermionic_filament.jpg.
- Thermionic_emission wikiPageWikiLinkText "Edison effect".
- Thermionic_emission wikiPageWikiLinkText "Edison effect, thermionic emission".
- Thermionic_emission wikiPageWikiLinkText "Richardson constant".
- Thermionic_emission wikiPageWikiLinkText "Schottky emission".
- Thermionic_emission wikiPageWikiLinkText "Schottky type".
- Thermionic_emission wikiPageWikiLinkText "Thermionic emission".
- Thermionic_emission wikiPageWikiLinkText "Thermionic emission#Richardson's Law".
- Thermionic_emission wikiPageWikiLinkText "Thermionic emission#Richardson's law".
- Thermionic_emission wikiPageWikiLinkText "Thermionic emission#Schottky emission".
- Thermionic_emission wikiPageWikiLinkText "Thermionic_emission".
- Thermionic_emission wikiPageWikiLinkText "electron emission process".
- Thermionic_emission wikiPageWikiLinkText "electron".
- Thermionic_emission wikiPageWikiLinkText "electrons emitted by the filament".
- Thermionic_emission wikiPageWikiLinkText "emission mix".
- Thermionic_emission wikiPageWikiLinkText "emission".
- Thermionic_emission wikiPageWikiLinkText "emitted".
- Thermionic_emission wikiPageWikiLinkText "the law named after him".
- Thermionic_emission wikiPageWikiLinkText "thermal electron emission".
- Thermionic_emission wikiPageWikiLinkText "thermal emission".
- Thermionic_emission wikiPageWikiLinkText "thermally induced electron emission".
- Thermionic_emission wikiPageWikiLinkText "thermionic cooling".
- Thermionic_emission wikiPageWikiLinkText "thermionic currents".
- Thermionic_emission wikiPageWikiLinkText "thermionic effect".
- Thermionic_emission wikiPageWikiLinkText "thermionic emission".
- Thermionic_emission wikiPageWikiLinkText "thermionic emission#Richardson's Law".
- Thermionic_emission wikiPageWikiLinkText "thermionic emitters".
- Thermionic_emission wikiPageWikiLinkText "thermionic phenomenon".
- Thermionic_emission wikiPageWikiLinkText "thermionic".
- Thermionic_emission wikiPageWikiLinkText "thermionically emits".