Georg Ernst Stahl

Johann Joachim Becher and the Phlogiston Theory of Combustion

Johann Joachim Becher and the Phlogiston Theory of Combustion

On May 6, 1636, German physician, alchemist, precursor of chemistry, scholar and adventurer Johann Joachim Becher was born. He is best known for his development of the phlogiston theory of combustion, in which all flammable objects were supposed to contain a substance which was released when the object burned, and his advancement of Austrian cameralism. “The chemists are a strange class of mortals, impelled by an almost insane impulse to seek their…
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Georg Ernst Stahl and the Phlogiston Theory

Georg Ernst Stahl and the Phlogiston Theory

On October 22, 1659, German chemist, physician and philosopher Georg Ernst Stahl was born. Stahl developed the phlogiston theory of combustion and of such related biological processes as respiration, fermentation, and decay. Combustible objects, he said, were rich in phlogiston, and during combustion is lost. The remaining ash, now having no phlogiston, could no longer burn. Until the late 18th century his works on phlogiston were accepted as an explanation for chemical…
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