Term Paper

816 Words Nov 24th, 2014 4 Pages

Student: Austin Stilwell Class: PHY-151 Instructor: Prof. G.Camilo Lab Date: July 21, 2014 CVCC
For my term paper I decided to research and write about Gustav Kirchhoff. Gustav was the son of a lawyer; he was born and educated in Königsberg, Prussia (now the Russian city Kaliningrad). He graduated from Albertus University in 1847 and soon after married Clara Richelot, the daughter of his mathematics professor. The couple immediately relocated to Berlin, where Kirchhoff had obtained an unpaid teaching position. In 1850, at the unusually young age of 26, he received an appointment as Professor Extraordinaire in Breslau (now Wroclaw), Poland (Gustav Robert Kirchhoff). Gustav is often
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Kirchhoff’s important work on thermal radiation was primarily carried out in the late 1850s and early 1860s. In 1859, his studies led him to propose what is commonly referred to as Kirchhoff’s law in thermodynamics. Proven in 1861, this law holds that at thermal static equilibrium, the emissivity of an object or surface is equivalent to its absorbance at any given wavelength and temperature. In the course of his studies of radiation, Kirchhoff coined the term black body to describe a hypothetical perfect radiator that absorbs all incidents light and, therefore, emits all of that light when maintained at a constant temperature in order to preserve equilibrium. In 1854, Kirchhoff was appointed a position as the professor of physics at the University of Heidelberg thanks to his good friend Robert Bunsen. Once he arrived at Heidelberg he and Bunsen began working and studying with one another. Together they founded spectrum analysis. This demonstrated that every element gives off a characteristic colored light when heated to incandescence. The light, when separated by a prism, has a pattern of individual wavelengths specific for each element. Using this method together they were able to discover two elements, Cesium which was discovered in 1860 and Rubidium which was discovered a year later in 1861(Kirchhoff's Spectroscope). These elements were named after the red and blue lines that appeared in their spectra. Kirchhoff later applied spectrum

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