Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.Robert Wilhelm Eberhard Bunsen (30 March 1811 16 August 1899) was a German chemist. He investigated emission spectra of heated elements, and with Gustav Kirchhoff discovered caesium (in 1860) and rubidium (in 1861). Bunsen developed several gas-analytical methods, was a pioneer in photochemistry, and did early work in the field of organoarsenic chemistry. With his laboratory assistant, Peter Desaga, he developed the Bunsen burner, an improvement on the laboratory burners then in use. The Bunsen-Kirchhoff Award for spectroscopy is named after Bunsen and his colleague, Gustav Kirchhoff.