Esclangon
# Ernest Benjamin Esclangon

### Born: 17 March 1876
in Mison, France

Died: 28 Jan 1954
in Eyrenville,France

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**Ernest Esclangon** studied mathematics at École Normale Supérieure and worked on quasi-periodic functions on which his doctoral thesis is written. He became an astronomer by accepting, out of curiosity, a position offered to him.
Esclangon became professor of astronomy at Strasbourg and then at Paris. From 1914 he worked on ballistics and in 1933, using an astronomical calculation of time, he started the 'talking clock' telephone service in Paris.

**References (2 books/articles)**

**References elsewhere in this archive:**

Rue Esclangon is in the 18th Arrondissement in Paris. You can see a list of Paris streets named after mathematicians in our archive.

There is a **Crater Esclangon** on the moon. You can see a list of lunar features named after mathematicians.

JOC/EFR December 1996