{"id":21782,"date":"2020-09-30T12:42:38","date_gmt":"2020-09-30T10:42:38","guid":{"rendered":"https:\/\/rinconeducativo.org\/efemerides\/30-de-septiembre-de-1870-nace-jean-perrin-sus-descubrimientos-resolvieron-una\/"},"modified":"2024-12-20T12:14:13","modified_gmt":"2024-12-20T11:14:13","slug":"september-30-1870-birth-jean-perrin-discoveries-settling-century-long-dispute","status":"publish","type":"re_efemeride","link":"https:\/\/rinconeducativo.org\/en\/anniversaries\/september-30-1870-birth-jean-perrin-discoveries-settling-century-long-dispute\/","title":{"rendered":"September 30, 1870 \u2013 Birth of Jean Perrin, his discoveries settling a century-long dispute"},"content":{"rendered":"
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\"\"<\/figure>\n<\/div>\n\n\n

Perrin first suggested that negative charges are external to the nucleus. In 1895, he found that cathode rays deposit charge in an electroscope (an instrument that can read whether a body is electrically charged), with which he confirmed that they were negatively charged particles and published his findings at the Acad\u00e9mie des Sciences. Joseph J. Thomson<\/a> was interested in measuring the speed of these particles and that they would eventually be identified as electrons.<\/p>\n\n\n

\n
\"Movimiento<\/figure>\n<\/div>\n\n\n

In 1905, Albert Einstein<\/a> published his theoretical explanation of Brownian motion (random motion observed in particles found in a liquid or gas medium as a result of collisions with the molecules of said fluid) in terms of atoms, and Perrin made the experimental work to test and verify Einstein's predictions, thus resolving the century-long dispute over the atomic theory formulated by John Dalton<\/a>.<\/p>\n\n\n\n

In 1909, he published his research on the Brownian motion of particles in aqueous solution, indicating that this motion was a consequence of the incessant bombardment of the particles by water molecules and offering estimates of their size and the value of Avogadro's Number<\/a> (number of particles). of molecules contained in a mole of gas under normal conditions) more exact than those that existed up to that moment. The results of his experiments were accepted as proof of the existence of molecules.<\/p>\n\n\n\n

En 1919, se dio cuenta de que la masa de un \u00e1tomo de helio es menor que la de cuatro \u00e1tomos de hidr\u00f3geno y que la equivalencia entre masa y energ\u00eda de Einstein implica que la fusi\u00f3n nuclear podr\u00eda liberar suficiente energ\u00eda para hacer brillar a las estrellas durante miles de millones de a\u00f1os.<\/p>\n\n\n\n

In 1926, he received the Nobel Prize in Physics for his work on the discontinuous structure of matter and for the discovery of sedimentation equilibrium.<\/p>\n\n\n\n

In 1940, he moved to the United States where he headed the scientific department at the Free School of Higher Learning in New York.<\/p>\n\n\n\n

If you want to know more about this scientist, click on the following link: Jean Baptiste Perrin<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

September 30, 1870 \u2013 Birth or Jean Perrin, his discoveries settling a century-long dispute.<\/p>\n","protected":false},"author":1088,"featured_media":18056,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"mes":[7219],"clasificacion_anterior":[7255],"class_list":["post-21782","re_efemeride","type-re_efemeride","status-publish","has-post-thumbnail","hentry","mes-september"],"acf":{"fecha":"18700930"},"yoast_head":"\nSeptember 30, 1870 \u2013 Birth of Jean Perrin, his discoveries settling a century-long dispute - Rinc\u00f3n educativo<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rinconeducativo.org\/en\/anniversaries\/september-30-1870-birth-jean-perrin-discoveries-settling-century-long-dispute\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"September 30, 1870 \u2013 Birth of Jean Perrin, his discoveries settling a century-long dispute - 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