De la loi de la gravitation universelle à MICROSCOPE

Manuel Rodrigues

doi:10.5802/crmeca.215

De la loi de la gravitation universelle à MICROSCOPE
[From the universal law of gravitation to MICROSCOPE]

Manuel Rodrigues ¹

¹ Science Co-Investigator of MICROSCOPE, Head of research unit in ONERA, France

Comptes Rendus. Mécanique, Volume 351 (2023) no. S4, pp. 73-79.

Abstract
Résumé

Since Galileo, the universality of the free fall of bodies has questioned physicists: the fall in the vacuum is independent of mass and composition. With the theory of general relativity, Enstein revolutionized the understanding of gravitation. The principle of Equivalence is then posed by Einstein as the founding principle of general relativity with the first consequence: the universality of free fall. This principle, tested more and more accurately since Galileo, has just taken a new step thanks to the MICROSCOPE space mission, which has improved the precision of the test by two orders of magnitude to $2.7 \times 10^{- 15}$ .

Depuis Galilée, l’universalité de la chute libre des corps questionne les physiciens : la chute s’effectue dans le vide indépendamment de la masse et de la composition. Avec la théorie de la relativité générale, Einstein révolutionne la compréhension de la gravitation. Le principe d’Equivalence est alors posé par Einstein comme principe fondateur de la relativité générale avec pour première conséquence : l’universalité de la chute libre. Ce principe testé de plus en plus précisément depuis Galilée vient de franchir une nouvelle étape grâce à la mission spatiale MICROSCOPE qui a amélioré la précision du test de deux ordres de grandeur à $2, 7 \times 10^{- 15}$ .

Received: 2023-05-04
Accepted: 2023-06-22
Online First: 2023-08-08
Published online: 2023-09-15

DOI: 10.5802/crmeca.215

Mot clés : Gravitation, Principe d’equivalence, Accelerometre, Relativite generale, Compensation de traînée, Senseur inertiel
Keywords: Gravitation, Equivalence principle, Accelerometer, General relativity, Drag-free, Inertial sensing

Author's affiliations:

Manuel Rodrigues ¹

¹ Science Co-Investigator of MICROSCOPE, Head of research unit in ONERA, France

License:

CC-BY 4.0

Copyrights: The authors retain unrestricted copyrights and publishing rights

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     author = {Manuel Rodrigues},
     title = {De la loi de la gravitation universelle \`a {MICROSCOPE}},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {73--79},
     publisher = {Acad\'emie des sciences, Paris},
     volume = {351},
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     year = {2023},
     doi = {10.5802/crmeca.215},
     language = {fr},
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Manuel Rodrigues. De la loi de la gravitation universelle à MICROSCOPE. Comptes Rendus. Mécanique, Volume 351 (2023) no. S4, pp. 73-79. doi : 10.5802/crmeca.215. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.215/

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Cited by

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