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Ampère was born on 20 January 1775 to Jean-Jacques Ampère, a prosperous businessman, and Jeanne Antoinette Desutières-Sarcey Ampère during the height of the French Enlightenment.
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Ampère and was
André-Marie Ampère ( 20 January 1775 – 10 June 1836 ) was a French physicist and mathematician who is generally regarded as one of the main founders of the science of classical electromagnetism, which he referred to as " electrodynamics ".
Jean-Jacques Ampère, a successful merchant, was an admirer of the philosophy of Jean-Jacques Rousseau, whose theories of education ( as outlined in his treatise Émile ) were the basis of Ampère ’ s education.
In later life Ampère claimed that he knew as much about mathematics and science when he was eighteen as ever he knew ; but, a polymath, his reading embraced history, travels, poetry, philosophy, and the natural sciences.
His mother was a devout woman, so Ampère was also initiated into the Catholic faith along with Enlightenment science.
The French Revolution ( 1787 – 99 ) that began during his youth was also influential: Ampère ’ s father was called into public service by the new revolutionary government, becoming a justice of the peace in a small town near Lyon.
When the Jacobin faction seized control of the Revolutionary government in 1792, Jean-Jacques Ampère resisted the new political tides, and he was guillotined on November 24, 1793, as part of the Jacobin purges of the period.
In 1802 Ampère was appointed a professor of physics and chemistry at the École Centrale in Bourg-en-Bresse, leaving his ailing wife and infant son in Lyon.
Despite his lack of formal qualifications, Ampère was appointed a professor of mathematics at the school in 1809.
As well as holding positions at this school until 1828, in 1819 and 1820 Ampère offered courses in philosophy and astronomy, respectively, at the University of Paris, and in 1824 he was elected to the prestigious chair in experimental physics at the Collège de France.
In 1814 Ampère was invited to join the class of mathematicians in the new Institut Impériale, the umbrella under which the reformed state Academy of Sciences would sit.
The most important of these was the principle that came to be called Ampère ’ s law, which states that the mutual action of two lengths of current-carrying wire is proportional to their lengths and to the intensities of their currents.
Using this physical explanation of electromagnetic motion, Ampère developed a physical account of electromagnetic phenomena that was both empirically demonstrable and mathematically predictive.
The death of André-Marie Ampère occurred decades before his new science was canonized as the foundation stone for the modern science of electromagnetism.
The symbol was used by André-Marie Ampère, after whom the unit of electric current is named, in formulating the eponymous Ampère's force law which he discovered in 1820.
The phenomenon was further investigated by Ampère, who discovered that two parallel current-carrying wires exerted a force upon each other: two wires conducting currents in the same direction are attracted to each other, while wires containing currents in opposite directions are forced apart.
Jean-Jacques Ampère ( 12 August 1800 – 27 March 1864 ) was a French philologist and man of letters.
Born in Lyon, he was the only son of the physicist André-Marie Ampère.
) of A-M and J-J Ampère ( 1805-1854 ) was published in 1875.
Soon after the discovery in 1820 by H. C. Ørsted that a magnetic needle is acted on by a voltaic current, André-Marie Ampère that same year was able to devise through experimentation the formula for the angular dependence of the force between two current elements .< ref >
Ampère and born
Ampère was born in 2007:
* June 10-André-Marie Ampère ( born 1775 ), physicist.
Ampère and on
Furthering Ørsted ’ s experimental work, Ampère showed that two parallel wires carrying electric currents attract or repel each other, depending on whether the currents flow in the same or opposite directions, respectively-this laid the foundation of electrodynamics.
In 1827 Ampère published his magnum opus, Mémoire sur la théorie mathématique des phénomènes électrodynamiques uniquement déduite de l ’ experience ( Memoir on the Mathematical Theory of Electrodynamic Phenomena, Uniquely Deduced from Experience ), the work that coined the name of his new science, electrodynamics, and became known ever after as its founding treatise.
The 1827 publication of Ampère ’ s synoptic Mémoire brought to a close his work over the previous seven years on the new science of electrodynamics.
* Catholic Encyclopedia on André Marie Ampère
Ørsted's work influenced Ampère to produce a theory of electromagnetism that set the subject on a mathematical foundation.
On the other hand, treating all charges on the same footing ( disregarding whether they are bound or free charges ), the generalized Ampère's equation, also called the Maxwell – Ampère equation, is in integral form ( see the " proof " section below ):
That is, the current density on the right side of the Ampère – Maxwell equation is:
The first commutator-type direct current machine was built by Hippolyte Pixii in 1832, based on a suggestion by André-Marie Ampère.
Gradient estimates were also used crucially in Yau's joint work with S. Y. Cheng to give a complete proof of the higher dimensional Hermann Minkowski problem and the Dirichlet problem for the real Monge – Ampère equation, and other results on the Kähler – Einstein metric of bounded pseudoconvex domains.
Later on acting on a suggestion by André-Marie Ampère other results were obtained by introducing a commutator, which produced a pulsating direct current which at this time was preferable to alternating current.
Ampère and 20
* January 20 – André-Marie Ampère, French physicist ( d. 1836 )
** De Mortagne Park-n-Ride ( AMT ) ( Boucherville, rue Ampère, exit 92 off Autoroute 20, )
Ampère and January
* January 22-André-Marie Ampère, French physicist ( died 1836 )
Ampère and 1775
It is named after André-Marie Ampère ( 1775 – 1836 ), French mathematician and physicist, considered the father of electrodynamics.
* June 10 – André-Marie Ampère, physicist ( b. 1775 )
* André-Marie Ampère ( 1775 – 1836 ), physicist ( namesake of electrical unit ampere )
* André-Marie Ampère ( 1775 – 1836 ), physicist and mathematician
Ampère and Jean-Jacques
André-Marie Ampère took his first regular job in 1799 as a mathematics teacher, which gave him the financial security to marry Carron and father his first child, Jean-Jacques, the next year.
( Jean-Jacques Ampère eventually achieved his own fame as a scholar of languages.
Jean-Jacques Ampère
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* 1864 – Jean-Jacques Ampère, French scholar ( b. 1800 )
* August 12 – Jean-Jacques Ampère, French philologist, writer, and historian ( d. 1864 )
And although she numbered among her admirers the duc de Montmorency, Lucien Bonaparte, Prince Augustus of Prussia, Pierre-Simon Ballanche, Jean-Jacques Ampère and Constant, none of them obtained over her so great an influence as did Chateaubriand, though she suffered much from his imperious temper.
* Jean-Jacques Ampère ( 1800 – 64 ), French philologist
Among the early regular contributors who established the review's reputation as an elite liberal vehicle of haute culture were Albert, 4th duc de Broglie, François Guizot, Jacques Nicolas Augustin Thierry, Ludovic Vitet, Paul-François Dubois, the literary critics Charles Augustin Sainte-Beuve and Gustave Plache, and Jean-Jacques Ampère.
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