France

Henri Léon Lebesgue and the Theory of Integration

Henri Léon Lebesgue and the Theory of Integration

On June 28, 1875, French mathematician Henri Léon Lebesgue was born. He is best known for his theory of integration, which was a generalization of the 17th century concept of integration, i.e. summing the area between an axis and the curve of a function defined for that axis. By extending the work of Camille Jordan and Émile Borel on the Riemann integral, Lebesgue provided a generalization that solved many of the difficulties…
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Siméon Denis Poisson’s Contributions to Mathematics

Siméon Denis Poisson’s Contributions to Mathematics

On June 21, 1781, French mathematician, geometer, and physicist Siméon Denis Poisson was born. He is known known for his work on definite integrals, advances in Fourier series, electromagnetic theory, and probability, esp. the eponymous Poisson series, the Poisson integral and the Poisson equation from potential theory. His works also included applications to electricity and magnetism, and astronomy. Simeon Denis Poisson – The Youth of a Mathematician Poisson was born in Pithiviers, Loiret,…
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The Undersea World of Jacques Cousteau

The Undersea World of Jacques Cousteau

On June 11, 1910, French naval officer, explorer, conservationist, filmmaker, innovator, scientist, photographer, author and researcher Jacques-Yves Cousteau was born. Cousteau is best known for his extensive underseas investigations. He was co-inventor of the aqualung which made SCUBA diving possible. He pioneered marine conservation and was a member of the Académie française. “From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only…
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Jean-Henri Fabre – The Virgil of Insects

Jean-Henri Fabre – The Virgil of Insects

On December 22, 1821, French entomologist Jean-Henri Fabre was born. Being a prolific author, his greatest achievement lies in the polularization of insect natural history. Victor Hugo dubbed him “the insects’ Homer” and Edmond Rostand named him the “Virgil of insects.” Darwin cited him as “an incomparable observer.” Butterflies and Grasshoppers Jean-Henri Casimir Fabre was born in Saint Léons in Aveyron, France. He spent the first years of his youth at Le Malaval,…
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The Conversational Eloquence of Madame de Staël

The Conversational Eloquence of Madame de Staël

Madame de Staël (1766-1817) On July 14, 1817, French woman of letters of Swiss origin Anne Louise Germaine de Staël-Holstein, commonly known as Madame de Staël, passed away. She was one of Napoleon’s principal opponents. Celebrated for her conversational eloquence, she participated actively in the political and intellectual life of her times. Her works, both critical and fictional, made their mark on the history of European Romanticism. She was a remarkable woman,…
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