Gustav Robert Kirchhoff (1824-1887)
German physicist born in Koenigsberg, in 1824 and died in Berlin, in 1887.
His more notable scientific works were in the domain of thermal radiation and of spectral analysis, being responsible for the discovery, in 1861, together with Bunsen, of the rubidium and cerium; this work enabled the first explanation of the absorption stripes usually called Fraunhofer stripes. Also accomplished studies on the theory of electrical circuits. Was professor of Physics at the University of Heidelberg. In 1874 it went to the University of Berlin and became member of the Science Academy.