- Biot , Jean Baptiste
- (1774–1862) French physicistBiot, a Parisian by birth, grew up during the French Revolution and at the age of 18 he joined the army as a gunner. He left a year later to study mathematics at the Ecole Polytechnique in Paris. On leaving he taught at a school in Beauvais but soon returned to Paris to become a professor of physics at the Collège de France.In 1804 Biot made an ascent in a balloon with Joseph Gay-Lussac. They reached a height of three miles and made many observations, including the fact that the Earth's magnetism was not measurably weaker at that height.For the next few years Biot collaborated with François Arago in many fields of research and they traveled to Spain together to measure the length of an arc of meridian, in order to calibrate a standard unit of length. Biot later went on a number of other important expeditions.His most famous work was on optical activity, for which, in 1840, he was awarded the Rumford medal of the Royal Society. He was the first to show that certain liquids and solutions, as well as solids, can rotate the plane of polarized light passing through them. Biot suggested that this is due to asymmetry in the molecules. From this idea grew the technique of polarimetry as a method of measuring the concentration of solutions.
Scientists. Academic. 2011.
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Biot, Jean-Baptiste — • Physicist and mathematician (1774 1862) Catholic Encyclopedia. Kevin Knight. 2006 … Catholic encyclopedia
Biot, Jean-Baptiste — (1774 1862) physicist, mathematician, astronomer Born in Paris, Jean Baptiste Biot became professor of physics at the collège de france in 1800 and was elected to membership in the Academy of Sciences in 1803. In that year he discovered the … France. A reference guide from Renaissance to the Present
Biot, Jean-Baptiste — ▪ French physicist born April 21, 1774, Paris, France died Feb. 3, 1862, Paris French physicist who helped formulate the Biot Savart law, which concerns magnetic fields, and laid the basis for saccharimetry, a useful technique of analyzing sugar … Universalium
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BIOT, JEAN BAPTISTE — an eminent French mathematician, astronomer, and physicist, born at Paris; professor of Physics in the College of France; took part in measuring an arc of the meridian along with Arago; made observations on the polarisation of light, and… … The Nuttall Encyclopaedia
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Jean-Baptiste Biot — Jean Baptiste Biot † Catholic Encyclopedia ► Jean Baptiste Biot A physicist and mathematician, born at Paris, France, 21 April, 1774; died. there, 3 February, 1862. He studied at first at the College of Louis le Grand; in 1793 he… … Catholic encyclopedia
Jean-Baptiste Biot — Pour les articles homonymes, voir Biot. Jean Baptiste Biot Jean Baptiste Biot Naissance 21 avril … Wikipédia en Français
Jean-Baptiste Biot — Infobox Scientist name = Jean Baptiste Biot box width = image width =150px caption = Jean Baptiste Biot birth date = 21 April 1774 birth place = Paris death date = 3 February 1862 death place = Paris residence = citizenship = nationality = French … Wikipedia