LEY DE STEFAN.docx.docx - LEY DE STEFAN-BOLTZMANN PARA LA...

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LEY DE STEFAN-BOLTZMANN PARA LA RADIACION Andres Felipe Campaña Castillo [1] , Vanessa Galofre Martínez [2] , Kevin Andres Pedroza Goenaga [3] , Yina Paola Vélez Mena [4] [1] Estudiante de Ingeniería ambiental [2] Estudiante de Ingeniería industrial [3] Estudiante de Ingeniería de sistemas [4] Estudiante de Ingeniería eléctrica. RESUMEN La ley de Stefan-Boltzmann establece que toda materia que no se encuentra a una temperatura infinita emite dos radiaciones térmicas. Estas radiaciones se originan a partir de la energía térmica de la materia limitada por la superficie más baja por la que fluyen, la velocidad a la que libera energía por unidad de área (W/m2) se denomina la potencia emisiva superficial E. La ley es muy precisa sólo para objetos negros ideales, los radiadores perfectos, llamados cuerpos negros. La ley fue deducida en 1879 por el físico austriaco Josef Stefan (1835-1893) basándose en las mediciones experimentales realizadas por el físico irlandés John Tyndall y fue derivada en 1884 a partir de consideraciones teóricas por Ludwig Boltzmann (1844-1906) usando la termodinámica. Palabras claves: radiación, potencia, cuerpo negro, energía. ABSTRACT: The Stefan-Boltzmann law states that all matter is not infinite temperature emit two thermal radiations. These radiations originating from the thermal energy of matter limited by the lower surface by flowing, the speed at which releases energy per unit area (W / m2) is called the surface emissive power E. Laws it is very accurate only for ideal black objects, the perfect radiators, called black bodies. The law was deduced in 1879 by the Austrian physicist Josef Stefan (1835-1893) based on experimental measurements made by the Irish physicist John Tyndall and in 1884 was derived from theoretical considerations by Ludwig Boltzmann (1844-1906) using thermodynamics. Keywords: radiation, power, black body, energy.
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I. INTRODUCCION Durante la mitad del siglo XIX, se realizaron estudios de carácter amplio sobre la radiación emitida por cuerpos calientes y para ello se utilizó cierta clase de objetos que poseen la propiedad de emitir la misma radiación térmica cuando se encuentran a la misma temperatura. Este tipo de objetos se les conoce con el nombre de cuerpo negro: Un cuerpo negro es un objeto ideal que absorbe toda la luz y toda la energía radiante que incide sobre él. Estos cuerpos no permiten la reflexión ni refracción de radiación sobre ellos.
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  • Spring '19
  • Jelica Rodriguez
  • Sistema Internacional de Unidades, Radiación, Cuerpo negro, Vatio

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