Alexis Clairaut, Date of Birth, Place of Birth, Date of Death

Alexis Clairaut

French mathematician, astronomer, geophysicist, and intellectual

Date of Birth: 13-May-1713

Place of Birth: Paris, Île-de-France, France

Date of Death: 17-May-1765

Profession: astronomer, physicist, mathematician, mechanic

Nationality: France

Zodiac Sign: Taurus

Alexis Claude Clairaut (French: [kl??o]; 13 May 1713 – 17 May 1765) was a French mathematician, astronomer, and geophysicist.
He was a prominent Newtonian whose work helped to establish the validity of the principles and results that Sir Isaac Newton had outlined in the Principia of 1687.
Clairaut was one of the key figures in the expedition to Lapland that helped to confirm Newton's theory for the figure of the Earth.
In that context, Clairaut worked out a mathematical result now known as "Clairaut's theorem".
He also tackled the gravitational three-body problem, being the first to obtain a satisfactory result for the apsidal precession of the Moon's orbit.
In mathematics he is also credited with Clairaut's equation and Clairaut's relation.

Louis-Jacques Cathelin (1738–1804)
Alternative names	Louis Jacques Cathelin; Cathelin; M. Cathelin
Description	French engraver
Date of birth/death	1738	1804
Location of birth/death	Paris	Paris
Work location	Paris
Authority control	: Q3260608 VIAF: 5001007 ISNI: 0000 0001 1587 864X ULAN: 500052257 LCCN: no2005063126 NLA: 36018106 WorldCat



Alternative names	Charles-Nicolas Cochin (II), Charles-Nicolas Cochin the Younger
Description	French graphic artist
Date of birth/death	22 February 1715	29 April 1790
Location of birth/death	Paris	Paris
Work period	rococo era QS:P2348,Q122960
Work location	Paris
Authority control	: Q2408093 VIAF: 51687541 ISNI: 0000 0001 2132 6120 ULAN: 500021138 LCCN: n84111949 NLA: 35029253 WorldCat