Etienne-Hyacinthe de Ratte

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Étienne-Hyacinthe Ratte (* 1722 in Montpellier ; † 1805 there ) was a French mathematician , astronomer and encyclopedist .

Live and act

Ratte studied mathematics and became secretary of the Académie de Montpellier at the age of 21 . In 1743 he made studies on gravity and successively published numerous papers on scientific questions.

Ratte also wrote a number of contributions to the Encyclopédie on physical subjects, such as froid , glace , gelée .

Although Ratte pursued diverse scientific interests, he devoted himself mainly to astronomy . In this discipline he made a large number of observations, for example the transit of Venus on June 6, 1761.

In the last years of his life he wrote about the history of the Histoire de l'Académie royale de Montpellier from its origin to the events of 1789.

In 1796 he was accepted into the Académie des Sciences in Paris.

Works (selection)

  • Sur les pressions qui naissent du poids des parties supérieures d'un fluide en repos sur les inférieures et sur les pressions latérales des fluides dans des vases de differententes figures.
  • Sur l'accroissement subit de la tige d'une espèce d'aloès, agave americana de Linné.
  • Research on the pesanteur in un milieu, composé de petits tourbillons
  • Histoire de l'Académie royale de Montpellier depuis son origine jusqu'aux événements de 1789.

literature

  • Ferdinand Hoefer: Nouvelle Biographie générale. t. 41, Paris, Firmin-Didot, 1862, pp. 697-699.
  • Pierre Larousse: Grand Dictionnaire universel du XIX e . vol. 13, Paris, Administration du grand Dictionnaire universel, p. 730.

Web links

Wikisource: Étienne-Hyacinthe Ratte  - Sources and full texts (French)

Individual evidence

  1. ^ Consortium of European Research Libraries. Rat, Etienne Hyacinthe de (1722-1805)
  2. ↑ Frank A. Kafker: Recherches sur Diderot et sur l'Encyclopédie. Année (1990) Volume 8 Numéro 8 p. 113
  3. ^ List of members since 1666: Letter R. Académie des sciences, accessed on February 20, 2020 (French).
personal data
SURNAME Rat, Etienne-Hyacinthe de
BRIEF DESCRIPTION French physicist, astronomer and encyclopedist
DATE OF BIRTH 1722
PLACE OF BIRTH Montpellier
DATE OF DEATH 1805
Place of death Montpellier