Hans Christian Ørsted

220px-Hans_Christian_Ørsted_daguerreotypeHans Christian Ørsted (Danish; 14 August 1777 – 9 March 1851) Physicist and chemist also known for advancing the science of electromagnetism. His most significant contribution in this area was the discovery that a magnetic field radiates from a wire or conductor through which there is a flow of electrical current. This principle is behind the operation of clamp-on ammeters, widely used by electricians today, which can measure the current flow through a wire or conductor simply by clamping the “jaws” of the instrument around it. A unit of magnetic induction called the “oersted” is named after him, however it is not commonly used today outside of electrical engineering studies. Read more…

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