German chemist who had a gas burner named for him & co-founded the sci. of chemical spectroscopy
Robert Bunsen - Wikipedia  Robert Wilhelm Eberhard Bunsen (30 March 1811  16 August 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 ... The BunsenKirchhoff Award for spectroscopy is named after Bunsen and...
Hertzsprung Russell Diagram - Teach Astronomy  Hertzsprung-Russell diagram showing color and size of stars. ... that exist, their first step was to devise a sensible way to arrange and study the data to find ... astronomer Ejnar Hertzsprung and the American astronomer Henry Norris Russell ... The Sun is near the middle of the diagram (one solar luminosity, spectral type G).