Alfred Perot

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Alfred Perot
Alfred Perot 2.jpg
Alfred Perot, a photo by Eugène Pirou
Born(1863-11-03)3 November 1863
Died28 November 1925(1925-11-28) (aged 62)
Known forFabry–Pérot interferometer
AwardsJanssen Medal (1912)
Rumford Medal (1918)

Jean-Baptiste Alfred Perot (French: [pəʁo]; 3 November 1863 – 28 November 1925) was a French physicist.

Together with his colleague Charles Fabry he developed the Fabry–Pérot interferometer in 1899.[1][2]

The French Academy of Sciences awarded him the Janssen Medal for 1912.[3] The Royal Society awarded Fabry and Perot the Rumford medal in 1918.


There is some confusion about the spelling of Perot's last name. Perot himself used the spelling Pérot in scientific publications, but according to the French civil registry, his family name was Perot, without accent.[4]


  1. ^ Fabry, C; Perot, A (1899). "Theorie et applications d'une nouvelle methode de spectroscopie interferentielle". Ann. Chim. Phys. 16 (7).
  2. ^ Perot, A; Fabry, C (1899). "On the Application of Interference Phenomena to the Solution of Various Problems of Spectroscopy and Metrology". Astrophysical Journal. 9: 87. Bibcode:1899ApJ.....9...87P. doi:10.1086/140557.
  3. ^ "Séance du 16 décembre". Le Moniteur Scientifique du Doctor Quesneville: 135. February 1913. Archived from the original on 2014-10-28.
  4. ^ Métivier, Françoise (September–October 2006). "Jean-Baptiste Alfred Perot" (PDF). Photoniques (in French) (25). Archived from the original (PDF) on 2007-11-10. Retrieved 2007-10-02. (inset "Pérot ou Perot?" on the second page. Translation: "In the previous issue...we wrote "Pérot", after the spelling that Alfred Perot himself used to sign his articles. Several readers pointed out to us that the "official" spelling — that is, the one used on the birth certificate — does not have an accent.")

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