[L'effet Sagnac et son interpretation by Paul Langevin]
Le nom de Georges Sagnac est aujourd'hui très connu des ingénieurs travaillant sur les systèmes de navigation, tant maritime qu'aérienne, qui exploitent sa découverte de 1913. Ce que l'on sait moins est que ce physicien était un farouche opposant à la relativité, théorie révolutionnaire qui avait été élaborée par Albert Einstein quelques années auparavant, en 1905. L'expérience de Sagnac a été pensée pour prouver l'existence de l'éther luminifère. Son interprétation correcte (relativiste) a été fournie par Paul Langevin en 1921.
The French physicist Georges Sagnac is nowdays frequently cited by the engineers who work on devices such as ring-laser gyroscopes. These systems operate on the principle of the Sagnac effect. It is less known that Sagnac was a strong opponent to the theory of special relativity proposed by Albert Einstein. He set up his experiment to prove the existence of the aether discarded by the Einsteinian relativity. An accurate explanation of the phenomenon was provided by Paul Langevin in 1921.
Gianni Pascoli 1
@article{CRPHYS_2017__18_9-10_563_0, author = {Gianni Pascoli}, title = {The {Sagnac} effect and its interpretation by {Paul} {Langevin}}, journal = {Comptes Rendus. Physique}, pages = {563--569}, publisher = {Elsevier}, volume = {18}, number = {9-10}, year = {2017}, doi = {10.1016/j.crhy.2017.10.010}, language = {en}, }
Gianni Pascoli. The Sagnac effect and its interpretation by Paul Langevin. Comptes Rendus. Physique, Volume 18 (2017) no. 9-10, pp. 563-569. doi : 10.1016/j.crhy.2017.10.010. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2017.10.010/
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