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John Henry Poynting ( 9 septembre 1852 – 30 mars 1914) est un physicien anglais qui travaille, entre autres, sur les ondes électromagnétiques. Il est professeur de physique au Mason Science College (qui devient plus tard l' Université de Birmingham) de 1880 jusqu'à sa mort.
John Henry Poynting FRS (9 September 1852 – 30 March 1914) was an English physicist. He was the first professor of physics at Mason Science College from 1880 to 1900, and then the successor institution, the University of Birmingham until his death.
John Henry Poynting (born September 9, 1852, Monton, Lancashire, England—died March 30, 1914, Birmingham, Warwickshire) was a British physicist who introduced a theorem that assigns a value to the rate of flow of electromagnetic energy known as the Poynting vector.
- The Editors of Encyclopaedia Britannica
Le théorème de Poynting, énoncé par John Henry Poynting, concerne la conservation de l'énergie dans un champ électromagnétique. Il établit une relation entre énergie électromagnétique, effet Joule et le flux du vecteur de Poynting.
L' éponyme du vecteur de Poynting est le physicien anglais John Henry Poynting ( 1852 - 1914) qui l'a introduit en 1884 5, 6, 7. Oliver Heaviside ( 1850 - 1925) l'a découvert quelques mois plus tard et de manière indépendante 5, 6, 8 .
28 mars 2012 · Poynting's name is familiar to every student of electromagnetism as the man who, in 1884, published a theorem for the conservation of energy in an electromagnetic field, as well as an expression for the flow of energy, now known, respectively, as Poynting's theorem and the Poynting vector.
John Henry Poynting. Physicien britannique (Monton, près de Manchester, 1852-Birmingham 1914). Il a développé une théorie des courants d'énergie pour les champs variables, étudié la pression de rayonnement et mesuré la densité moyenne de la Terre (1890).
