Coulomb, Charles-Augustin de


Coulomb, Charles-Augustin de
born June 14, 1736, Angoulême, France
died Aug. 23, 1806, Paris

French physicist.

After serving as a military engineer in the West Indies, he returned to France in the 1780s to pursue scientific research. To investigate Joseph Priestley's law of electrical repulsions, he invented a sensitive instrument to measure the electrical forces involved. A light rod made of an insulator, with a small conducting sphere at each end, was suspended horizontally by a fine wire so that it was free to twist when another charged sphere was brought close to it. By measuring the angle through which the rod twisted, Coulomb could measure the repulsive forces. He is best known for formulating Coulomb's law. He also did research on friction of machinery, on windmills, and on the elasticity of metal and silk fibres. The coulomb, a unit of electric charge, was named in his honour.

* * *

▪ French physicist
born June 14, 1736, Angoulême, France
died August 23, 1806, Paris
 French physicist best known for the formulation of Coulomb's law, which states that the force between two electrical charges is proportional to the product of the charges and inversely proportional to the square of the distance between them. Coulombic force (Coulomb force) is one of the principal forces involved in atomic reactions.

      Coulomb spent nine years in the West Indies as a military engineer and returned to France with impaired health. Upon the outbreak of the French Revolution, he retired to a small estate at Blois and devoted himself to scientific research. In 1802 he was appointed an inspector of public instruction.

 Coulomb developed his law as an outgrowth of his attempt to investigate the law of electrical repulsions as stated by Joseph Priestley of England. To this end he invented sensitive apparatus to measure the electrical forces involved in Priestley's law and published his findings in 1785–89. He also established the inverse square law of attraction and repulsion of unlike and like magnetic poles, which became the basis for the mathematical theory of magnetic forces developed by Siméon-Denis Poisson. He also did research on friction of machinery, on windmills, and on the elasticity of metal and silk fibres. The coulomb, a unit of electric charge, was named in his honour.
 

* * *


Universalium. 2010.

Look at other dictionaries:

  • Coulomb, Charles-Augustin de — (14 jun. 1736, Angulema, Francia–23 ago. 1806, París). Físico francés. Después de prestar servicios como ingeniero militar en las Indias Occidentales, regresó a Francia en la década de 1780 para dedicarse a la investigación científica. Con el fin …   Enciclopedia Universal

  • Coulomb, Charles-Augustin de — (1736 1806)    physicist    Born in Angoulême, Charles Augustin de Coulomb served as a military engineer in the French west Indies before retiring to Blois at the time of the revolution of 1789. A pioneer in electrical theory, he continued his… …   France. A reference guide from Renaissance to the Present

  • Coulomb,Charles Augustin de — Cou·lomb (ko͞oʹlŏm , lōm , ko͞o lŏmʹ, lôɴʹ), Charles Augustin de. 1736 1806. French physicist who pioneered research into magnetism and electricity and formulated Coulomb s law. * * * …   Universalium

  • Coulomb , Charles Augustin de — (1736–1806) French physicist Coulomb, who was born in Angoulême, France, was educated in Paris and then joined the army, serving as an engineer. He spent nine years in Martinique designing and building fortifications, returning to France because… …   Scientists

  • Charles-Augustin de Coulomb — Portrait by Hippolyte Lecomte Born 14 June 1736 …   Wikipedia

  • Charles Augustin de Coulomb — (* 14. Juni 1736 in Angoulême; † 23. August 1806 in Paris) war ein französischer Physiker und begründete die Elektrostatik sowie die Magnetostatik …   Deutsch Wikipedia

  • Charles-Augustin De Coulomb — Charles de Coulomb Pour les articles homonymes, voir Coulomb (homonymie). Charles de Coulomb Charles Augustin Coulomb (14  …   Wikipédia en Français

  • Charles-Augustin de Coulomb — Charles de Coulomb Pour les articles homonymes, voir Coulomb (homonymie). Charles de Coulomb Charles Augustin Coulomb (14  …   Wikipédia en Français

  • Charles-augustin de coulomb — Charles de Coulomb Pour les articles homonymes, voir Coulomb (homonymie). Charles de Coulomb Charles Augustin Coulomb (14  …   Wikipédia en Français

  • Charles Augustin De Coulomb — Charles de Coulomb Pour les articles homonymes, voir Coulomb (homonymie). Charles de Coulomb Charles Augustin Coulomb (14  …   Wikipédia en Français


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.