"Tairiseach von Klitzing"@ga . "En physique quantique, la constante de von Klitzing est li\u00E9e aux propri\u00E9t\u00E9s de conductivit\u00E9 \u00E9lectrique. Elle permet de mesurer avec une extr\u00EAme pr\u00E9cision la valeur d'une r\u00E9sistance \u00E9lectrique. Sa valeur se calcule \u00E0 partir de l'effet Hall quantique en 2D. . Depuis le 20 mai 2019, les valeurs num\u00E9riques des deux constantes h et e sont exactes et respectivement fix\u00E9es \u00E0 h = 6,626 070 15 \u00D7\u202F10\u221234 J s pour la d\u00E9finition du kilogramme (kg) et \u00E0 e = 1,602 176 634 \u00D7\u202F10\u221219 C pour la d\u00E9finition de l'amp\u00E8re (A). La valeur num\u00E9rique exacte de la constante est ainsi de : ."@fr . "933397915"^^ . "En physique quantique, la constante de von Klitzing est li\u00E9e aux propri\u00E9t\u00E9s de conductivit\u00E9 \u00E9lectrique. Elle permet de mesurer avec une extr\u00EAme pr\u00E9cision la valeur d'une r\u00E9sistance \u00E9lectrique. Sa valeur se calcule \u00E0 partir de l'effet Hall quantique en 2D. L'\u00E9ponymecol. 2von_Klitzing_constant_1-0\" class=\"reference\">col. 1''s.v.''von_Klitzing_(constante_de)_2-0\" class=\"reference\"> de la constante est le physicien allemand Klaus von Klitzing qui a re\u00E7u le prix Nobel de physique en 1985 pour sa d\u00E9couverte de l'effet Hall quantique entiercol. 1''s.v.''Hall_quantique_(effet)_3-0\" class=\"reference\">chap. 16_4-0\" class=\"reference\"> qu'il avait mise en \u00E9vidence en 1980col. 1''s.v.''Hall_quantique_(effet)_3-1\" class=\"reference\">. La constante a la dimension d'une r\u00E9sistancecol. 2von_Klitzing_constant_1-1\" class=\"reference\">col. 1''s.v.''von_Klitzing_(constante_de)_2-1\" class=\"reference\"> (M L2 T\u20133 I\u20132) et son unit\u00E9 SI est l'ohm (\u03A9). Son symbole est RKcol. 2von_Klitzing_constant_1-2\" class=\"reference\">col. 1''s.v.''von_Klitzing_(constante_de)_2-2\" class=\"reference\"> et elle est d\u00E9finie comme le quotient de la constante de Planck (h) par le carr\u00E9 de la charge \u00E9l\u00E9mentaire (e)col. 1''s.v.''von_Klitzing_(constante_de)_2-3\" class=\"reference\"> : . Depuis le 20 mai 2019, les valeurs num\u00E9riques des deux constantes h et e sont exactes et respectivement fix\u00E9es \u00E0 h = 6,626 070 15 \u00D7\u202F10\u221234 J s pour la d\u00E9finition du kilogramme (kg) et \u00E0 e = 1,602 176 634 \u00D7\u202F10\u221219 C pour la d\u00E9finition de l'amp\u00E8re (A). La valeur num\u00E9rique exacte de la constante est ainsi de : . Le Klitzing est la r\u00E9sistance , soit , o\u00F9 est la constante de Planck et la charge \u00E9l\u00E9mentaire. Cette r\u00E9sistance universelle sert de r\u00E9f\u00E9rence primaire pour le Syst\u00E8me international d'unit\u00E9s (SI) (il n'y a donc pas d'incertitude sur sa valeur) et est li\u00E9e \u00E0 l'imp\u00E9dance du vide, o\u00F9 est la perm\u00E9abilit\u00E9 magn\u00E9tique du vide et la vitesse de la lumi\u00E8re dans le vide, par la constante de structure fine"@fr . . . . . . . "\u0421\u0442\u0430\u043B\u0430 \u0444\u043E\u043D \u041A\u043B\u0456\u0442\u0446\u0438\u043D\u0433\u0430"@uk . "Constante de von Klitzing"@fr . "Von-Klitzing-Konstante"@de . . "La costante di von Klitzing, indicata con \u00E8 una costante fisica definita come il rapporto tra la costante di Planck e il quadrato della carica elettrica fondamentale e ha le dimensioni di una resistenza: . Come nel caso della velocit\u00E0 della luce il valore della costante di von Klitzing \u00E8 fissato convenzionalmente: a partire dal 1\u00BA gennaio 1990, il suo valore \u00E8 per definizione pari a 25812,807 ohm. Tale valore \u00E8 stato in precedenza misurato con grande precisione per mezzo di misure dell'effetto Hall quantistico in eterostrutture. Tali misure sono state ripetute pi\u00F9 volte in diversi laboratori metrologici e i risultati sono stati successivamente confrontati al fine di determinare l'entit\u00E0 massima dell'errore sperimentale. Poich\u00E9 tali misure costituiscono fino a ora le pi\u00F9 precise misure di resistenza disponibili, il valore della costante di von Klitzing \u00E8 stato assunto come standard fondamentale di resistenza. Occorre per\u00F2 fare attenzione in quanto essa non definisce operativamente l'ohm (gi\u00E0 definito a partire dall'ampere e dalle altre grandezze fondamentali del sistema internazionale) bens\u00EC costituisce un riferimento per costruire degli opportuni standard di resistenza. Si pu\u00F2 mostrare che la Costante di Klitzing rappresenta una resistenza elettrica a partire dall'espressione dove h \u00E8 la costante di Planck (che vale 6,6260755\u00D710\u221234Js), m \u00E8 la massa dell'elettrone (che vale 9,1093897\u00D710\u221231 kg) e c \u00E8 la velocit\u00E0 della luce (che vale 8,987551787\u00D71016 m/s) per cui L'elettrone ha una carica elettrica e = 1,60217733\u00D710\u221219 C che alla distanza R del raggio elettromagnetico dell'elettrone (che vale 2,81794092\u00D710\u221215 m) determina il potenziale elettrico Il prodotto della frequenza \u03BD dell'elettrone per 2\u03C0R vale la velocit\u00E0 2,1876907\u00D7106 m ovvero \u03B1c con \u03B1 costante di struttura fine dell'elettrone (che \u00E8 uguale a 1/137,0359895). Il prodotto della carica elettrica e la frequenza vale la corrente elettrica il rapporto con i valori riportati su \u00E8 da cui l'identit\u00E0 (quantitativa) tra e . Eguagliando la e la , tenuto conto che V/i = 1/2\u03B5\u03B1c e, come mostrato in precedenza, \u03B1c = 2\u03C0R\u03BD si ha: che consente di ottenere l'identit\u00E0 \"qualitativa\" tra e la perch\u00E9 l'energia emessa o assorbita dall'elettrone (h\u03BD) \u00E8 pari all'energia del suo potenziale elettrico. Dall'ultima equazione si pu\u00F2 ottenere che la dimensione della \u00E8 una frequenza/volt. La Costante di Josephson \u00E8 data da e vale 0,483597668\u00D71015 C/Js. Il rapporto 2\u03BD/V vale 0,483597668 GHz/V Eguagliando le ultime due equazioni si ottiene"@it . . "Tairiseach a bhfuil an modh caighde\u00E1nach idirn\u00E1isi\u00FAnta chun friota\u00EDocht leictreach a thomhas bunaithe air. Is \u00ED a shiombail n\u00E1 RK, agus is \u00E9 an sainmh\u00EDn\u00EDu air n\u00E1 h/e2 mar arb \u00E9 h tairiseach Planck agus e lucht an leictreoin. Dh\u00EDorthaigh Klaus von Klitzing \u00E9 seo \u00F3 iarmhairt chandamach Hall. Tomhaistear RK go turgnamhach. Socra\u00EDodh ar luach RK-90 = 25,812.807 \u03A9 i 1990 mar bhun\u00FAs leis an gcaighde\u00E1n idirn\u00E1isi\u00FAnta i dtomhas na friota\u00EDochta."@ga . "Costante di von Klitzing"@it . "Die Von-Klitzing-Konstante, auch Klitzing-Konstante ist eine physikalische Konstante der Dimension Widerstand. Als Quantum des Quanten-Hall-Effekts ist sie nach dessen Entdecker Klaus von Klitzing benannt. Die Von-Klitzing-Konstante h\u00E4ngt mit dem Planckschen Wirkungsquantum und der Elementarladung wie folgt zusammen: . Die Konstanten und in SI-Einheiten sind exakt festgelegt. Der Wert der Von-Klitzing-Konstante betr\u00E4gt:"@de . "Die Von-Klitzing-Konstante, auch Klitzing-Konstante ist eine physikalische Konstante der Dimension Widerstand. Als Quantum des Quanten-Hall-Effekts ist sie nach dessen Entdecker Klaus von Klitzing benannt. Die Von-Klitzing-Konstante h\u00E4ngt mit dem Planckschen Wirkungsquantum und der Elementarladung wie folgt zusammen: . Die Konstanten und in SI-Einheiten sind exakt festgelegt. Der Wert der Von-Klitzing-Konstante betr\u00E4gt:"@de . "165"^^ . "\u041A\u0432\u0430\u043D\u0442 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u043E\u0433\u043E \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u044F, \u043A\u043E\u043D\u0441\u0442\u0430\u043D\u0442\u0430 \u0444\u043E\u043D \u041A\u043B\u0438\u0442\u0446\u0438\u043D\u0433\u0430 RK = h/e\u00B2, \u0433\u0434\u0435 h \u2014 \u043F\u043E\u0441\u0442\u043E\u044F\u043D\u043D\u0430\u044F \u041F\u043B\u0430\u043D\u043A\u0430, e \u2014 \u044D\u043B\u0435\u043C\u0435\u043D\u0442\u0430\u0440\u043D\u044B\u0439 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u0438\u0439 \u0437\u0430\u0440\u044F\u0434. \u0412 \u0441\u0438\u0441\u0442\u0435\u043C\u0435 \u0421\u0418 \u043A\u0432\u0430\u043D\u0442 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u043E\u0433\u043E \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u044F \u0440\u0430\u0432\u0435\u043D 25 812,807 45... \u041E\u043C. \u0412 \u044D\u0442\u043E\u0439 \u0441\u0438\u0441\u0442\u0435\u043C\u0435 \u0444\u043E\u0440\u043C\u0443\u043B\u0443 \u0434\u043B\u044F \u043A\u0432\u0430\u043D\u0442\u0430 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u043E\u0433\u043E \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u044F \u043C\u043E\u0436\u043D\u043E \u043F\u0435\u0440\u0435\u043F\u0438\u0441\u0430\u0442\u044C \u043A\u0430\u043A Z/(2\u03B1), \u0433\u0434\u0435 376 \u041E\u043C \u2014 \u0438\u043C\u043F\u0435\u0434\u0430\u043D\u0441 \u0441\u0432\u043E\u0431\u043E\u0434\u043D\u043E\u0433\u043E \u043F\u0440\u043E\u0441\u0442\u0440\u0430\u043D\u0441\u0442\u0432\u0430, \u03B1 \u2014 \u043F\u043E\u0441\u0442\u043E\u044F\u043D\u043D\u0430\u044F \u0442\u043E\u043D\u043A\u043E\u0439 \u0441\u0442\u0440\u0443\u043A\u0442\u0443\u0440\u044B."@ru . . "Von Klitzing constant"@en . . . "\u0421\u0442\u0430\u043B\u0430 \u0444\u043E\u043D \u041A\u043B\u0456\u0442\u0446\u0438\u043D\u0433\u0430, , \u0434\u0435 \u0441\u0442\u0430\u043B\u0430 \u041F\u043B\u0430\u043D\u043A\u0430, \u0430 \u2014 \u0435\u043B\u0435\u043C\u0435\u043D\u0442\u0430\u0440\u043D\u0438\u0439 \u0435\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u043D\u0438\u0439 \u0437\u0430\u0440\u044F\u0434, \u0454 \u0443\u043D\u0456\u0432\u0435\u0440\u0441\u0430\u043B\u044C\u043D\u043E\u044E \u0444\u0456\u0437\u0438\u0447\u043D\u043E\u044E \u0441\u0442\u0430\u043B\u043E\u044E \u0437 \u0440\u043E\u0437\u043C\u0456\u0440\u043D\u0456\u0441\u0442\u044E \u043E\u043F\u043E\u0440\u0443. \u0412 \u041C\u0456\u0436\u043D\u0430\u0440\u043E\u0434\u043D\u0456\u0439 \u0441\u0438\u0441\u0442\u0435\u043C\u0456 \u0432\u0435\u043B\u0438\u0447\u0438\u043D (ISQ) \u043A\u0432\u0430\u043D\u0442 \u0435\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u043D\u043E\u0433\u043E \u043E\u043F\u043E\u0440\u0443 \u0434\u043E\u0440\u0456\u0432\u043D\u044E\u0454 = 25 812,807 449 \u041E\u043C."@uk . . . "Tairiseach a bhfuil an modh caighde\u00E1nach idirn\u00E1isi\u00FAnta chun friota\u00EDocht leictreach a thomhas bunaithe air. Is \u00ED a shiombail n\u00E1 RK, agus is \u00E9 an sainmh\u00EDn\u00EDu air n\u00E1 h/e2 mar arb \u00E9 h tairiseach Planck agus e lucht an leictreoin. Dh\u00EDorthaigh Klaus von Klitzing \u00E9 seo \u00F3 iarmhairt chandamach Hall. Tomhaistear RK go turgnamhach. Socra\u00EDodh ar luach RK-90 = 25,812.807 \u03A9 i 1990 mar bhun\u00FAs leis an gcaighde\u00E1n idirn\u00E1isi\u00FAnta i dtomhas na friota\u00EDochta."@ga . . . . . "739808"^^ . . "\u0421\u0442\u0430\u043B\u0430 \u0444\u043E\u043D \u041A\u043B\u0456\u0442\u0446\u0438\u043D\u0433\u0430, , \u0434\u0435 \u0441\u0442\u0430\u043B\u0430 \u041F\u043B\u0430\u043D\u043A\u0430, \u0430 \u2014 \u0435\u043B\u0435\u043C\u0435\u043D\u0442\u0430\u0440\u043D\u0438\u0439 \u0435\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u043D\u0438\u0439 \u0437\u0430\u0440\u044F\u0434, \u0454 \u0443\u043D\u0456\u0432\u0435\u0440\u0441\u0430\u043B\u044C\u043D\u043E\u044E \u0444\u0456\u0437\u0438\u0447\u043D\u043E\u044E \u0441\u0442\u0430\u043B\u043E\u044E \u0437 \u0440\u043E\u0437\u043C\u0456\u0440\u043D\u0456\u0441\u0442\u044E \u043E\u043F\u043E\u0440\u0443. \u0412 \u041C\u0456\u0436\u043D\u0430\u0440\u043E\u0434\u043D\u0456\u0439 \u0441\u0438\u0441\u0442\u0435\u043C\u0456 \u0432\u0435\u043B\u0438\u0447\u0438\u043D (ISQ) \u043A\u0432\u0430\u043D\u0442 \u0435\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u043D\u043E\u0433\u043E \u043E\u043F\u043E\u0440\u0443 \u0434\u043E\u0440\u0456\u0432\u043D\u044E\u0454 = 25 812,807 449 \u041E\u043C."@uk . "\u041A\u0432\u0430\u043D\u0442 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u043E\u0433\u043E \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u044F, \u043A\u043E\u043D\u0441\u0442\u0430\u043D\u0442\u0430 \u0444\u043E\u043D \u041A\u043B\u0438\u0442\u0446\u0438\u043D\u0433\u0430 RK = h/e\u00B2, \u0433\u0434\u0435 h \u2014 \u043F\u043E\u0441\u0442\u043E\u044F\u043D\u043D\u0430\u044F \u041F\u043B\u0430\u043D\u043A\u0430, e \u2014 \u044D\u043B\u0435\u043C\u0435\u043D\u0442\u0430\u0440\u043D\u044B\u0439 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u0438\u0439 \u0437\u0430\u0440\u044F\u0434. \u0412 \u0441\u0438\u0441\u0442\u0435\u043C\u0435 \u0421\u0418 \u043A\u0432\u0430\u043D\u0442 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u043E\u0433\u043E \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u044F \u0440\u0430\u0432\u0435\u043D 25 812,807 45... \u041E\u043C. \u0412 \u044D\u0442\u043E\u0439 \u0441\u0438\u0441\u0442\u0435\u043C\u0435 \u0444\u043E\u0440\u043C\u0443\u043B\u0443 \u0434\u043B\u044F \u043A\u0432\u0430\u043D\u0442\u0430 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u043E\u0433\u043E \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u044F \u043C\u043E\u0436\u043D\u043E \u043F\u0435\u0440\u0435\u043F\u0438\u0441\u0430\u0442\u044C \u043A\u0430\u043A Z/(2\u03B1), \u0433\u0434\u0435 376 \u041E\u043C \u2014 \u0438\u043C\u043F\u0435\u0434\u0430\u043D\u0441 \u0441\u0432\u043E\u0431\u043E\u0434\u043D\u043E\u0433\u043E \u043F\u0440\u043E\u0441\u0442\u0440\u0430\u043D\u0441\u0442\u0432\u0430, \u03B1 \u2014 \u043F\u043E\u0441\u0442\u043E\u044F\u043D\u043D\u0430\u044F \u0442\u043E\u043D\u043A\u043E\u0439 \u0441\u0442\u0440\u0443\u043A\u0442\u0443\u0440\u044B. \u042D\u0442\u0430 \u0432\u0435\u043B\u0438\u0447\u0438\u043D\u0430 \u044F\u0432\u043B\u044F\u0435\u0442\u0441\u044F \u043D\u0430\u0438\u0431\u043E\u043B\u0435\u0435 \u0443\u0434\u043E\u0431\u043D\u043E\u0439 \u0435\u0434\u0438\u043D\u0438\u0446\u0435\u0439 \u0438\u0437\u043C\u0435\u0440\u0435\u043D\u0438\u044F \u0432 \u0442\u0435\u0445 \u0441\u043B\u0443\u0447\u0430\u044F\u0445, \u043A\u043E\u0433\u0434\u0430 \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u0435 \u0441\u0438\u0441\u0442\u0435\u043C\u044B \u043E\u043F\u0440\u0435\u0434\u0435\u043B\u044F\u0435\u0442\u0441\u044F \u043A\u0432\u0430\u043D\u0442\u043E\u0432\u044B\u043C\u0438 \u044D\u0444\u0444\u0435\u043A\u0442\u0430\u043C\u0438. \u0412 \u0447\u0430\u0441\u0442\u043D\u043E\u0441\u0442\u0438, \u0445\u043E\u043B\u043B\u043E\u0432\u0441\u043A\u043E\u0435 \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u0435 \u0432 \u043A\u0432\u0430\u043D\u0442\u043E\u0432\u043E\u043C \u044D\u0444\u0444\u0435\u043A\u0442\u0435 \u0425\u043E\u043B\u043B\u0430 \u0435\u0441\u0442\u044C RK, 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\u0412\u0435\u043B\u0438\u0447\u0438\u043D\u0430 RK-90, \u0438\u0441\u043F\u043E\u043B\u044C\u0437\u0443\u0435\u043C\u0430\u044F \u0434\u043B\u044F \u043A\u0430\u043B\u0438\u0431\u0440\u043E\u0432\u043A\u0438 \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u0439, \u043F\u043E \u043E\u043F\u0440\u0435\u0434\u0435\u043B\u0435\u043D\u0438\u044E \u0440\u0430\u0432\u043D\u0430 25 812,807 \u041E\u043C (\u0442\u043E\u0447\u043D\u043E). \u0420\u0435\u043A\u043E\u043C\u0435\u043D\u0434\u0430\u0446\u0438\u044F \u0438\u0441\u043F\u043E\u043B\u044C\u0437\u043E\u0432\u0430\u0442\u044C \u044D\u0442\u043E \u0437\u043D\u0430\u0447\u0435\u043D\u0438\u0435 \u0431\u044B\u043B\u0430 \u043E\u0442\u043C\u0435\u043D\u0435\u043D\u0430 \u0432 \u0440\u0430\u043C\u043A\u0430\u0445 \u0438\u0437\u043C\u0435\u043D\u0435\u043D\u0438\u044F \u043E\u043F\u0440\u0435\u0434\u0435\u043B\u0435\u043D\u0438\u0439 \u0421\u0418 2018\u20142019 \u0433\u043E\u0434\u043E\u0432."@ru . "\u041A\u0432\u0430\u043D\u0442 \u044D\u043B\u0435\u043A\u0442\u0440\u0438\u0447\u0435\u0441\u043A\u043E\u0433\u043E \u0441\u043E\u043F\u0440\u043E\u0442\u0438\u0432\u043B\u0435\u043D\u0438\u044F"@ru . "La costante di von Klitzing, indicata con \u00E8 una costante fisica definita come il rapporto tra la costante di Planck e il quadrato della carica elettrica fondamentale e ha le dimensioni di una resistenza: . Si pu\u00F2 mostrare che la Costante di Klitzing rappresenta una resistenza elettrica a partire dall'espressione dove h \u00E8 la costante di Planck (che vale 6,6260755\u00D710\u221234Js), m \u00E8 la massa dell'elettrone (che vale 9,1093897\u00D710\u221231 kg) e c \u00E8 la velocit\u00E0 della luce (che vale 8,987551787\u00D71016 m/s) per cui Il prodotto della carica elettrica e la frequenza vale la corrente elettrica il rapporto"@it .