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Maupertuis, Pierre-Louis Moreau de (1698-1759)

Maupertuis, Pierre-Louis Moreau de (1698-1759)

French astronomer, mathematician, and biologist

A mathematician, biologist, and astronomer, Pierre-Louis Moreau de Maupertuis was a strong proponent of Sir Issac Newton's theory of gravitation, helped confirm Newton's theory on the exact shape of the earth, and formulated the principle of least action in physics . Born in Saint Malo, France, Maupertuis had a wide range of scientific interests. As a biologist, he wrote Systéme de la Nature, in which he provided the first accurate scientific record of a dominant hereditary trait transmitted among humans. He also introduced the theory of the survival of the fittest in his Essai de Cosmologie, a theory that Charles Darwin later expounded to wide acceptance.

Maupertuis may be best known for his formulation in 1744 of the principle of least action, also known as the minimum principle or Maupertuis' principle. Essentially, the principle states that any change that occurs in the universe and nature, such as a moving body or light rays, changes in the most economical path possible. For example, bubbles form in a shape that presents the smallest surface for a given volume of air. In Essai de Cosmologie, Maupertuis presented his theory as something that might help prove the existence of God by unifying the laws of the universe. In 1736, Maupertuis led a famous expedition to Lapland near the North Pole that proved Newton's theory that the earth is an oblate sphere (flattened at the poles). The proof was accomplished by measuring the length of degree along a meridian and comparing the findings with the findings of another expedition near the equator in Peru performing similar measurements.

Despite his many accomplishments, Maupertuis was considered arrogant by many of his fellow countrymen. Eventually, Maupertuis became a target of German mathematician Samuel Koenig, who accused him of plagiarism, and of the French author Voltaire (16941778), whose satirical writings about Maupertuis were so savage that Maupertuis eventually left France. Maupertuis died in virtual exile in Basel, Switzerland, in the home of Swiss mathematician Johann Bernoulli (16671748).

See also Earth (planet); Electromagnetic spectrum

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Maupertuis, Pierre Louis Moreau de

Pierre Louis Moreau de Maupertuis (pyĕr lwē môrō´ də mōpĕrtüē´), 1698–1759, French mathematician and astronomer. For his skillful support of Newton's theory he was admitted to the Royal Society of London in 1728. He headed (1736–37) an expedition of academicians to Lapland, where he confirmed Newton's theory of the flattening of the earth at the poles. In 1740 he went to Berlin upon the invitation of Frederick II of Prussia, who later placed him in charge of the new academy. Besides his numerous astronomical writings, including Discours sur la figure des astres (1732) and Discours sur la parallaxe de la lune (1741), he wrote a work setting forth a mechanistic view of the universe, Essai de cosmologie (1750), and several biological studies. Quarrels, particularly with Samuel Koenig and Voltaire (who satirized him in several writings, especially Diatribe du Docteur Akakia), and illness complicated his later years.

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"Maupertuis, Pierre Louis Moreau de." The Columbia Encyclopedia, 6th ed.. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/maupertuis-pierre-louis-moreau-de