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figure german history man old people pioneer portrait robert scientist sketchRobert Bunsen Editorial Photo
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Robert Bunsen #20370141
Description
Robert Bunsen (1811 - 1899) was a German chemist. He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with Gustav Kirchhoff.Picture from an 100 years old encyclopedia book.
This image is editorial