Robert Bunsen using a spectroscope. Robert Bunsen (1811-1899) was a German chemist who investigated emission spectra of heated elements and invented the Bunsen burner,a kind of laboratory burner | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NYPL / Science Source |
Taille de l’image : | 4210 px × 2767 px |
Model Release : | Non requis |
Property Release : | Disponible |
Restrictions : |
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