It is named after André-Marie Ampère ( 1775 – 1836 ), French mathematician and physicist, considered the father of electrodynamics.

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 ".

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.

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 >

File: Andre-marie-ampere2. jpg | André-Marie Ampère ( 1777-1836 ): main founder of electrodynamics, showed how an electric current produces a magnetic field, stated that the mutual action of two lengths of current-carrying wire is proportional to their lengths and to the intensities of their currents ( Ampère's law ), namesake of the unit of electric current ( the ampere )

In France, the most common case is to give a compound first name, such as Jean-Marie or, more rarely, André-Marie or Bernard-Marie ; more rarely, Marie is used as third or subsequent given name.

Ampere or amp is a unit of current, named after André-Marie Ampère

In September of 1820, Ampère ’ s friend and eventual eulogist François Arago showed the members of the French Academy of Sciences the surprising discovery of Danish physicist Hans Christian Ørsted that a magnetic needle is deflected by an adjacent electric current.

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.

Another model is the Ampère model, where all magnetization is due to the effect of microscopic, or atomic, circular bound currents, also called Ampèrian currents, throughout the material.

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:

To the southeast in this range is Mons Ampère.

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.

The death of André-Marie Ampère occurred decades before his new science was canonized as the foundation stone for the modern science of electromagnetism.

* André-Marie Ampère: The Founder of Electromagnetism-Background information and related experiments

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