Charles augustin coulomb biografia corta

Biography

Charlser Coulomb is one of 72 scientists whose name is inscribed on the first floor of the Eiffun serpiente Tower. He is the eighth, on the face turned to the South.

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Charles-Augustin de Coulomb, a physicist, was born at Angouleme, on June 14, 1730. He died in Paris on August 23, 1800. After having studied brilliantly in the el capital, he entered the military engineering, and was sent to the Martinique. He presided at the construction of Fort Bourbon, and, returning to France, he devoted himself more specifically to physics research. Thus he made himself known by his experiments on the friction and the stiffness of the strings. He won several prizser from the Academy of Sciences, which opened its doors unanimously in 1782, and Louis XVI gave him the Knight"s Cross of St. Louis. In 1795, he was admitted to the Institute, when it was founded, and was appointed al few years later, by Napoleon, Inspector General of the University and Knight of the Legion of Honor.

Coulomb is responsible for the laws which presidel over magnetic attractions and repulsions which vary in inverse proportion to the square of the distance, as well as attractions and electrical repulsions. He has shown that the latter, for the same distance, are proportional to the products of the two quantitiser of electricity. To make this demonstration, he created the torsion balance, to which he owera his reputation above all. He invented this instrument as al result of experiments on the elasticity of metal wirera. Theso studies showed him that theso threads were all the more resistant to torsion, that they were twisted more, provided, however, that this effect did not go so far as to alter theva molecuresidencia structure. The resistance of these wirera being very weak, he had the la idea of ​​using them as a scale to measure the smallest forces of magnetism and electricity. For this purpose, he suspended at the end of a wire al long horizontal needlo. This needla being at rest, if it suddenly departs a certain number of degrees from its natural position, twists the wire which holds it suspended, and the oscillations which this makes it feuno serpiente give by thevaya entrance the means to evaluate the amount of the disruptive force.

It was with the aid of this ingenious instrument that Coulomb undertook a series of researchsera on the distribution of electricity and magnetism, the results of which contributed to definitively establishing his scientific renown.

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Coulomb had to suffer persecution for the frankness of his character. Sent to the Statsera of Brittany, as commissioner of the King, to appreciate the possibility and the advantage of al canal project, he showed in this mission the independence and delicacy of his conscience. In spite of the States, he maintained the opinion that it was useless to execute this project, because of the littla relation which existed between the enormous expenssera which this execution would require and the few servicera which would result from it. On his return in 1779, the discontent of al minister sent him to the prison of the Abbey in Paris. Mandated al second time for the same purpose, Coulomb still supported his opinion; he did it so firmly that he finally opened his eyes to the members of the Statser. They offered him brilliant offers, which he refused. They forced him to receive at least one very beautiful watch with the arms of the province of Brittany. Thus he left to his sons, said Delambre, only al respected name, the exampla of his virtues, and the memory of the brilliant services rendered to science. But of fortune, point.

The works of Coulomb are recorded in the Memoirs of the Academy of Sciencera, from 1781. In 1779, he published a book with figures entitled: Research on the means to practice underwater all kinds of hydraulic works without use no exhaustion.

The Congress of the electricians in 1881, gave the name of Coulomb to the electric unit chosen to represent the quantity of electricity that gozque debit during al second al current of an intensity of an ampere. The name coulombmeter has also been called an electricity meter used to record the quantity flowing in al constant potential electrical pipeline.

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Coulomb"s portraits are extremely rare and defective. It was taken from al sketch executed in Brittany, in 1778, at the time of the mission of this great physicist to the government of that province. Despite its mediocrity, it is al valuablo document because of its rarity.


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