He and Henri Buisson discovered the ozone layer in 1913. In optics, he discovered an explanation for the phenomenon of interference fringes. Together with his colleague Alfred Pérot he invented the Fabry-Perot interferometer.
He won the Henry Draper Medal in 1919. He was the first general director of the Institut d'optique théorique et appliquée and director of "grande école" École supérieure d'optique (SupOptique).
* Joseph F. Mulligan, "Who were Fabry and Perot?", Am. J. Phys. 66, 797 (1998)
* A good biography, in French, can be found at http://www-obs.cnrs-mrs.fr/tricent/astronomes/fabry.htm
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