Jean Rey (chemist)

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Jean Rey (* around 1590 in Le Bugue ; † 1645 there ) was a French chemist and doctor.

Rey studied medicine in Montpellier and then was a doctor in his hometown. He corresponded with René Descartes and Marin Mersenne .

When a pharmacist (Brun in Bergerac ) asked why metals such as tin and lead gain weight when heated ( calcining ), he replied that they absorb a substance from the air. He published this in 1630 ( Essay sur le recherche de la cause, par la quelle l'etain et le plomb augmentent de poids quant on les calcines , Bazas 1630). Similar experiments were undertaken in the 17th century by John Mayow , Robert Boyle and others, but the idea of ​​absorbing components of the air only prevailed with Antoine Laurent de Lavoisier in the 18th century (who also finally refuted the phlogiston theory, which on the contrary assumed the release of a substance upon incineration).

He invented a forerunner of the thermometer ( called a thermoscope by him ).

literature

  • Winfried R. Pötsch, Annelore Fischer, Wolfgang Müller: Lexicon of important chemists . In: Lexicon of important chemists . Harri Deutsch, Frankfurt am Main 1989, ISBN 3-8171-1055-3 .
  • Jean Rey: About the cause of the increase in weight of tin and lead during calcification, Ostwalds Klassiker 172, Leipzig: W. Engelmann 1909 (Ed. Max Speter, Ernst Ichenhäuser)