Johan Gottschalk Wallerius

Johan Gottschalk Wallerius

Johan Gottschalk Wallerius (* 11. July 1709 in Stora Mellösa, Närke, Sweden; † 16. November 1785 in Uppsala, Sweden) was an important chemist and Mineraloge 18. Century.

1749 it entered the again furnished chair for chemistry at the University of Uppsala as the first. Two years later it coined/shaped the conceptual distinction of the sciences established meanwhile in a pure and an applied form. To chemistry related it created the pair of terms chemia pura and chemia applicata. Thus to it an important step, those succeeded up to then abschätzig as “purely relating to crafts” and “dirtily” verpönte chemistry both universitär and socially to revalue.

The historical meaning of this distinction becomes clear only on the background of social pagings during the clearing-up, in which the old, purely mental science ideal a new, civil science term yielded. The thought of a practical science got along better with the new rational ideas of a “active progress” and the common usefulness of the knowledge, than the up to then usual sharp separation from pure science and art. Wallerius had thereby a substantial portion of the solution of the method controversy in 18. Century over the new authentication of the sciences.


 

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