Reseña de" Carl Wilhelm Scheele"

Carl Wilhelm Scheele (1742-1786) a scientist with little formal education and training in science, became one of the greatest experimental chemists of all times, discovering, isolating, studying, and characterizing a very large number of elements and inorganic and organic compounds, among them, oxygen, chlorine, silicon tetrafluoride, copper arsenite, glycerol, lactose, and the acids hydrofluoric, hydrogen sulfide, hydrogen cyanide, tartaric, citric, lactic, uric, benzoic, gallic acid, oxalic, prussic, arsenic, molybdic, and tungstic. He was the first to report the action of different light of different wavelength on silver salts (which became the basis of modern photography). Scheele was a strong believer in the phlogiston theory and based on it the explanation of his findings; he did not go further on other possible theories.