Robert Wilhelm Eberhard Bunsen (March 30, 1811 - Augus 16, 1899) was a German chemist. He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with the physicist Gustav Kirchhoff. Bunsen developed several gas-analytical methods, was a pioneer in photochemistry, and did early work in the field of organoarsenic chemistry.

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Robert Bunsen, German Chemist

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