The Google doodle is dedicated to a German chemist Robert Wilhelm Eberhard Bunsen (31 March 1811 – 16 August 1899) who investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with Gustav Kirchoff.
In order to perform a research area called spectrum analysis, Bunsen and his laboratory assistant, Peter Desaga, had perfected a special gas burner by 1855, influenced by earlier models. The newer design of Bunsen and Desaga, which provided a very hot and clean flame, is now called simply the "Bunsen Burner".
Its a very interesting fact that although he is popular for Bunsen burner he has not invented this instrument.
