Ampere, Andre

See also Ampere, Andre-Marie Clausius, Rudolf Julius Emmanuel Electricity Electricity, History of Faraday, Michael Gibbs, Josiah Willard Magnetism and Magnets Molecular Energy Oersted, Hans Christian Thomson, William. 

Ampere, Andre Marie (1775-1836) French physicist who from 1809 taught at the Ecole Polytechnique in Paris. He is best known tor putting electromagnetism (which... 

Andre-Marie Ampere was born m Lyons, France, the son of a wealthy merchant. Ampere s education was determined by his father, Jean-Jacques, who followed Jean Jacques Rousseau s theories of education. Ampere was left to educate himself, as his inclinations dictated, among the books of his father s extensive library. At an early age Ampere discovered a talent for mathematics, working out the early books of Euclid by himself. On finding that some of the books he wished to consult in the librai y in Lyons were in Latin, he taught himself the language. Ampere s mother was a devout Catholic, who ensured he was thoroughly instructed in the faith. 

Hofmann, J. R. (1995). Andre-Mane Ampere. Oxford Blackivcll. 

The quantity of electric charge is measured m coulombs, and the unit of electric current—the number of coulombs per second that go past any point— is the ampere (A), named after French physicist Andre Marie Ampere ... 

As a first step, you need information about measurements in electricity. You know that the flow of electrons through an external circuit is called the electric current. It is measured in a unit called the ampere (symbol A), named after the French physicist Andre Ampere (1775-1836). The quantity of electricity, also known as the electric charge, is the product of the current flowing through a circuit and the time for which it flows. The quantity of electricity is measured in a unit called the coulomb (symbol C). This unit is named after another French physicist, Charles Coulomb (1736-1806). The ampere and the coulomb are related, in that one coulomb is the quantity of electricity that flows through a circuit in one second if the current is one ampere. This relationship can be written mathematically. 

James Clerk Maxwell (1831-1879), against a background of experimental and theoretical work by Andre Ampere (1775-1836). Karl Gauss (1777-1855) and Michael Faraday (1791-1867), developed the electromagnetic wave theory of... 

Andre-Marie Ampere created a mathematical theory in the 1820s for magnetic fields and electric currents. The SI unit of electrical current is named after him. 

Andre Marie Ampere (1775-1836), French mathematician and physicist, was the first to apply mathematics to the study of electrical current. Consistent with Benjamin Franklin s definitions of positive and negative charge. Ampere defined a positive current to be the direction of flow of positive charge. Although we now know that negative electrons cairy current in metals. Ampere s definition has survived to the present. The unit of cunent, the ampere, is named in his honor. 

Andre Marie Ampere, a French mathematical physicist, published his classical work "Theory of Electrodynamic Phenomena"... 

Although this great theoretical synthesis was the work of James Clerk Maxwell (Fig. 3.10) in Scotland, it in fact grew out of the experimental researches of many scientists, including Hans Christian Oersted in Denmark, Charles Augustin de Coulomb, Jean-Baptiste Biot, and Andre-Marie Ampere in France, and Michael Faraday (Fig. 3.11) in England. Oersted was the first to show in 1820 that there was an intimate connection between electricity and magnetism when he observed... 

Once in Paris, Sir Humphry Davy was presented with a sample of a newly isolated, dark-gray substance by the physicist Andre Marie Ampere (Sacks, 2001, chapter 11). Some well-known French chemists had already done some preliminary work on this material Courtois had isolated it from the ashes of a sea-weed Desormes and Clement had hypothesized it might be an element with properties similar to chlorine, which was an substance everyone knew Davy had established as an element. Now it was time for Davy to have a go. In rapid response to the challenge and with great curiosity, Davy set up his portable chemistry laboratory in his Parisian hotel room (Klopfer, 1969, p. 89). He simply had to solve the mystery residing in Airpere s gift (J. Davy, 2001). 

Fluorine was named by French scientist Andre Ampere in 1812, but it wasn t isolated until 1886 by Henri Moissan. Moissan was able to achieve this by applying electrolysis of potassium bifluoride (KHF2) in a solution of hydrofluoric acid (HF). This won him the Nobel Prize in 1906. 

The ampere is the basic unit of electric current. It is that current which produces a specified force between two parallel wires which are 1 meter apart in a vacuum. It is named after the French physicist Andre Ampere (1775-1836). kelvin [K]... 

Ampere am- pir, -per [Andre-Marie Ampere] (1881) n. (A) The primary electrical unit of the SI system, upon which all other electrical units are based. The ampere itself is defined as that current, which, if maintained in two long, parallel, fine wires located Im apart in a vacuum, will produce between these conductors a force of 2 X 10 N/m of length. Practically, an ampere is the current that flows between two points connected with an electric resistance of one ohm when their potential difference is IV. 

Unfortunately, the terms in which Avogadro expressed his views were rather obscure and failed to make much impression on the chemists of the day. Two exceptions were the French physicist and chemist Andre Ampere and the Alsatian chemist Charles Gerhardt, both of whom adopted the view that elemental gases were composed of diatomic molecules. 

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