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Topic: Jean Baptiste Joseph Fourier


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  Jean Baptiste Joseph Fourier - LoveToKnow 1911   (Site not responding. Last check: 2007-09-26)
JEAN BAPTISTE JOSEPH FOURIER (1768-1830), French mathematician, was born at Auxerre on the 21st of March 1768.
Fourier was one of the savants who accompanied Bonaparte to Egypt in 1798; and during this expedition he was called to discharge important political duties in addition to his scientific ones.
In 1826 Fourier became a member of the French Academy, and in 1827 succeeded Laplace as president of the council of the Ecole Polytechnique.
www.1911encyclopedia.org /Jean_Baptiste_Joseph_Fourier   (800 words)

  
 Jean Baptiste Joseph Fourier
On the institution of the École Normale at Paris in 1795 he was sent to teach in it, and was afterwards attached to the École Polytechnique, where he occupied the chair of analysis.
Fourier was one of the savants who accompanied Napoleon Bonaparte to Egypt in 1798; and during this expedition he was called to discharge important political duties in addition to his scientific ones.
In 1826 Fourier became a member of the French Academy, and in 1827 succeeded Pierre-Simon Laplace as president of the council of the École Polytechnique.
www.nndb.com /people/558/000087297   (692 words)

  
  Joseph Fourier - Wikipedia, the free encyclopedia
Jean Baptiste Joseph Fourier (March 21, 1768 - May 16, 1830) was a French mathematician and physicist who is best known for initiating the investigation of Fourier series and their application to problems of heat flow.
Fourier was recommended to the Bishop of Auxerre, and through this introduction, he was educated by the Benedictines of the Convent of St. Mark.
Fourier is also credited with the discovery in his essay in 1824 that gases in the atmosphere might increase the surface temperature of the Earth.
en.wikipedia.org /wiki/Jean_Baptiste_Joseph_Fourier   (833 words)

  
 Jean-Baptiste Joseph Fourier - Wikipedia
Jean-Baptiste Joseph Fourier (Auxerre, 21 maart 1768 – Parijs, 16 mei 1830) was een bekend Frans wis- en natuurkundige.
Fourier werd geboren in Auxerre als zoon van een kleermaker en ontving onderwijs in de krijgsschool van Auxerre.
Fourier claimde dat alle functies van een variabele, of ze nu continu of discontinu zijn, kunnen worden uitgeschreven als een reeks van sinussen van veelvouden van deze variabelen.
nl.wikipedia.org /wiki/Jean_Baptiste_Joseph_Fourier   (285 words)

  
 Jean Baptiste Joseph Fourier
Jean Baptiste Joseph Fourier (March 21, 1768 - May 16, 1830) was a French mathematician and physicist who is best known for initiating the investigation of Fourier series.
After the British victories and the capitulation of the French under General Menou in 1801, Fourier returned to France, and was made prefect of Grenoble, and it was while there that he made his experiments on the propagation of heat.
Fourier left an unfinished work on determinate equations which was edited by Navier[?], and published in 1831; this contains much original matter, in particular there is a demonstration of Fourier's theorem on the position of the roots of an algebraic equation.
www.ebroadcast.com.au /lookup/encyclopedia/je/Jean_Baptiste_Joseph_Fourier.html   (490 words)

  
 Jean Baptiste Joseph Fourier -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-09-26)
Fourier went with (French general who became emperor of the French (1769-1821)) Napoleon on his Eastern expedition in 1798, and was made governor of Lower Egypt.
Fourier recognized that Earth primarily gets energy from Sun radiation for which (The envelope of gases surrounding any celestial body) atmosphere is (Click link for more info and facts about transparent) transparent and that internal Earth heat doesn't contribute much to the energy balance.
Fourier reported on an experiment by M. de Saussure with a fl box exposed to the Sun, and in which if thin glass is put on top of the box the temperature inside of the box increases.
www.absoluteastronomy.com /encyclopedia/J/Je/Jean_Baptiste_Joseph_Fourier.htm   (979 words)

  
 Jean Baptiste Joseph Delambre - LoveToKnow 1911   (Site not responding. Last check: 2007-09-26)
JEAN BAPTISTE JOSEPH DELAMBRE (1749-1822), French astronomer, was born at Amiens on the 19th of September 1 749.
His college course, begun at Amiens under the abbe Jacques Delille, was finished in Paris, where he took a scholarship at the college of Plessis.
These books show marvellous erudition; but some of the judgments expressed in them are warped by prejudice; they are diffuse in style and overloaded with computations.
www.1911encyclopedia.org /Jean_Baptiste_Joseph_Delambre   (392 words)

  
 Jean Baptiste Joseph Fourier (1768 - 1830)
Jean Baptiste Joseph Fourier was born at Auxerre on March 21, 1768, and died at Paris on May 16, 1830.
Fourier left and unfinished work on determinate equations which was edited by Navier, and published in 1831; this contains much original matter, in particular there is a demonstration of Fourier's theorem on the position of the roots of an algebraical equation.
Fourier's proof is the same as that usually given in textbooks on the theory of equations.
www.maths.tcd.ie /pub/HistMath/People/Fourier/RouseBall/RB_Fourier.html   (477 words)

  
 Jean-Baptiste Joseph Fourier - Wikipédia
Em dezembro de 1789 Fourier foi a Paris para apresentar, na Academia, suas pesquisas para a solução de equações numéricas, assunto que o interessou pelo resto da vida.
Fourier foi deixado no Cairo para educar os egípcios ou ter sua garganta cortada.
Fourier sem a necessária autoridade para deixar seu posto e salvar-se do perigo, lá ficou até 1801, quando os franceses, depois de Trafalgar, finalmente reconheceram que os britânicos e não eles deviam regenerar os Egípcios.
pt.wikipedia.org /wiki/Jean-Baptiste_Joseph_Fourier   (1353 words)

  
 Jean Baptiste Joseph Fourier   (Site not responding. Last check: 2007-09-26)
Fourier was elected secretary to the Institute, a position he continued to hold during the entire French occupation of Egypt.
Fourier was elected to the Académie des Sciences in 1817, and served as secretary to the mathematical section.
Fourier resumed his mathematical researches and published a number of papers, some in pure mathematics while some were on applied mathematical topics.
www.stetson.edu /~efriedma/periodictable/html/Fe.html   (643 words)

  
 Biography of Jean-Baptiste-Joseph Fourier
Baron Jean-Baptiste-Joseph Fourier (March 21 1768-May 16, 1830), born in poor circumstances in Auxerre, introduced the idea that an arbitrary function, even one defined by different analytic expressions in adjacent segments of its range (such as a staircase waveform), could nevertheless be represented by a single analytic expression.
Fourier was appointed as Prefect of Isèe by Napoleon in 1802 after a brief return to his former position as Professor of Analysis at the Ecole Polytechnique in Paris.
Fourier’s days in provincial government then ended and he moved to Paris to enter a life of science and scientific administration, being elected to the Académie des Sciences in 1817, to the position of permanent secretary in 1823, and to the Académie Française in 1826.
www.swarthmore.edu /NatSci/echeeve1/Ref/Fourier/FourierBio.html   (946 words)

  
 Encyclopedia: Jean Baptiste Joseph Fourier
The Fourier transform, named after Jean Baptiste Joseph Fourier, is an integral transform that re-expresses a function in terms of sinusoidal basis functions, i.
In mathematics, a Fourier series, named in honor of Joseph Fourier (1768-1830), is a representation of a periodic function (often taken to have period 2π — in a sense, the simplest case) as a sum of periodic functions of the form which are harmonics of ei x.
Fourier reported on an experiment by M. de Saussure with a fl box exposed to the Sun, and in which if thin glass is put on top of the box the temperature inside of the box increases [1] (http://www.wmconnolley.org.uk/sci/fourier_1827/fourier_1827.html#text).
www.nationmaster.com /encyclopedia/Jean-Baptiste-Joseph-Fourier   (1885 words)

  
 Fourier biography
Fourier began teaching at the Collège de France and, having excellent relations with Lagrange, Laplace and Monge, began further mathematical research.
Fourier returned to France in 1801 with the remains of the expeditionary force and resumed his post as Professor of Analysis at the École Polytechnique.
Fourier had not made reference to Biot's 1804 paper on this topic but Biot's paper is certainly incorrect.
www-history.mcs.st-andrews.ac.uk /Biographies/Fourier.html   (2076 words)

  
 Jean Baptiste Joseph Fourier, Baron Biography / Biography of Jean Baptiste Joseph Fourier, Baron Biography Biography
The French mathematical physicist Jean Baptiste Joseph, Baron Fourier (1768-1830), was the first to discuss in a comprehensive manner the various aspects of the flow of heat in bodies.
Fourier served from 1798 to 1802 as secretary of the Institut d'Égypte, established by Napoleon to explore systematically the archeological riches of that ancient land.
Fourier proved himself a tactful diplomat, and upon his return to France Napoleon appointed him perfect of the department of lsère, with Grenoble as its capital, where he served from 1801 to 1814.
www.bookrags.com /biography-jean-baptiste-joseph-fourier-baron   (632 words)

  
 Encyclopedia: Jean-Baptiste Joseph Fourier
He was born at Auxerre in the Yonne d partement of France, the son of a tailor, and was educated by the Benedictines.
After the British victories and the capitulation of the French under General Menou in 1801, Fourier returned to France, and was made prefect of Is re, and it was while there that he made his experiments on the propagation of heat.
In 1822 he published his Th orie analytique de la chaleur, in which he bases his reasoning on Newton's law of cooling, namely, that the flow of heat between two adjacent molecules is proportional to the extremely small difference of their temperatures.
www.nationmaster.com /encyclopedia/Jean_Baptiste-Joseph-Fourier   (831 words)

  
 Cory Schneider   (Site not responding. Last check: 2007-09-26)
Baron Jean Baptiste Joseph Fourier was an early French mathematician who provided physical optics with Fourier transforms, Fourier series, and the whole genre of Fourier optics.
Fourier was very interested in Egyptology and while in Egypt he worked with Thomas Young, the father of linearity, on the Rosetta stone.
Fourier series are used in applied mathematics, and especially in physics and electronics, to express periodic functions such as those that comprise communications signal waveforms.
www.u.arizona.edu /~corys   (659 words)

  
 JEAN BAPTISTE JOSEPH F... - Online Information article about JEAN BAPTISTE JOSEPH F...
It is known that the sum of an infinite series of continuous terms can be discontinuous only at points in the neighbourhood of which the convergence of the series is not uniform, but non-uniformity of convergence of the series does not necessarily imply discontinuity in the sum.
Examples of Fourier's Series.—(a) Let f(x) be given from o to 1, by Ax) =c, when olx<21, and by f(x)-c from 21 to 1; it is required to find a sine series, and also a cosine series, which shall represent the function in the interval.
The Ultimate Values of the Coefficients in Fourier's Series.—If f(x) is everywhere finite within the given int¢'eval -2r to +vr, it can be shown that an, b,,, the coefficients of cos nx, sin nx in the series which represent the function, are such that na,,, nb,,, however.
encyclopedia.jrank.org /FLA_FRA/FOURIER_JEAN_BAPTISTE_JOSEPH_17.html   (5679 words)

  
 Jean-Baptiste Joseph Fourier - Wikipedia, den fria encyklopedin
Jean-Baptiste Joseph Fourier, född 21 mars 1768, död 16 maj 1830, fransk matematiker och fysiker, som kanske är bäst ihågkommen för sin undersökning av fourier-serier.
Fourier var en tid underlärare vid École normale och därefter professor i matematik vid École polytechnique.
Efter sin återkomst till Frankrike utnämndes Fourier 1802 till prefekt i departementet Isère samt blev 1808 baron och 1815 prefekt i departementet Rhône.
sv.wikipedia.org /wiki/Jean-Baptiste_Joseph_Fourier   (252 words)

  
 Jean Baptiste Joseph Fourier - Viquipèdia
Jean-Baptiste-Joseph Fourier (Auxerre, França, 1768 - París, 1830) matemàtic, físic i egiptòleg francès; era fill d'un sastre, i va ser educat pels benedictins.
Fourier i altres companys de l'École Polytechnique van acompanyar Napoleó en la seva expedició oriental de 1798.
A partir d'aquesta teoria va desenvolupar les denominada «Sèries de Fourier», de notable importància en el posterior desenvolupament de l'anàlisi matemàtica, i amb interessants aplicacions a la resolució de nombrosos problemes de física (més tard, Dirichlet va aconseguir una demostració rigorosa de diversos teoremes que Fourier va deixar plantejats).
ca.wikipedia.org /wiki/Jean_Baptiste_Joseph_Fourier   (326 words)

  
 Encyclopaedia Britannica: Fourier, (Jean-Baptiste-)Joseph, Baron
Fourier, the son of a tailor, first attended the local military school conducted by Benedictine monks.
After his return to France, Fourier was charged with the publication of the enormous mass of Egyptian materials.
Fourier began his work on the Théorie analytique de la chaleur in Grenoble in 1807 and completed it in Paris in 1822.
www.math.jhu.edu /~shiffman/606/fourier   (707 words)

  
 No. 1878: Jean Baptiste Joseph Fourier
And Joseph Fourier might well have been the last of those greats.
But Fourier, having succeeded in altering the very character of both engineering and mathematics, spent his last days swathed, mummy-like in warm clothing, in his overheated Paris apartment.
Joseph Fourier Savant et Préfet 1768-1830, Grenoble: Bibliotheques Munici-pales, 1989.
www.uh.edu /engines/epi1878.htm   (552 words)

  
 Joseph Fourier   (Site not responding. Last check: 2007-09-26)
Joseph Fourier was born in 1768 in Auxerre in the département of Yonne; a town steeped in history.
Fourier was warned and therefore prepared a token defence of the town at one gate and left by the other, heading towards Lyons (ostensibly to warn the Bourbons of the danger).
Fourier treated the initial distribution of temperatures around the ring as a superposition of many simple sinusoids that varied from peak to trough to peak an integer number of times along the circumference of the ring.
www.todayinsci.com /F/Fourier_JBJ/FourierPoliticianScientistBio.htm   (4839 words)

  
 Joseph Fourier   (Site not responding. Last check: 2007-09-26)
Joseph Fourier was a young scientist in the employ of Napoleon.
The basic thesis of his theory was that if one had a complete set of functions, any arbitrary function could be accurately described by a linear combination of the various members of this complete set of functions.
Fourier analysis is extremely important in modern mathematics and the ideas are the basis upon which will describe the wavefunction of complex systems such as molecule and solids.
www.cobalt.chem.ucalgary.ca /ziegler/chm373/rudiment/tourclas/fourier.htm   (232 words)

  
 AllRefer.com - Fourier, Jean Baptiste Joseph, Baron (Mathematics, Biography) - Encyclopedia
Fourier, Jean Baptiste Joseph, Baron 1768–1830, French mathematician and physicist.
He originated Fourier's theorem on vibratory motion and the Fourier series, which provided a method for representing discontinuous functions by a trigonometric series.
Fourier was professor (1795–98) at the Ecole polytechnique, Paris; accompanied Napoleon I to Egypt; and was prefect of IsEre (1802–15).
reference.allrefer.com /encyclopedia/F/FourierJ.html   (194 words)

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