Claude-Louis Berthollet, French chemist, c 1822-1841.

Tardieu, Ambroise

 
Claude-Louis Berthollet, French chemist, c 1822-1841.
4 0 c m
 
30cm
actual image size: 22cm x 32cm

Description

Engraving by Ambroise Tardieu after an oil painting by an American artist. Comte Claude-Louis Berthollet (1748-1822), was an innovator in physical and applied chemistry. Berthollet was elected to the Academy of Sciences in 1781. He helped Antoine Lavoisier research gunpowder and form the new chemical nomenclature. In 1785 he demonstrated the effectivenes of using chlorine for bleaching, and also showed ammonia to be a compound of hydrogen and nitrogen. Napoleon made him a count and senator, but Berthollet later voted for his deposition and became a peer after the Bourbon restoration. Berthollet was also a member of the Royal Society in London.

© Science Museum / Science & Society Picture Library

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