Search results
Results From The WOW.Com Content Network
Hans Christian Ørsted (/ ˈ ɜːr s t ɛ d /; [5] Danish: [ˈhænˀs ˈkʰʁestjæn ˈɶɐ̯steð] ⓘ; anglicized as Oersted; [note 1] 14 August 1777 – 9 March 1851) was a Danish chemist and physicist who discovered that electric currents create magnetic fields. This phenomenon is known as Oersted's law. He also discovered aluminium, a ...
His invention of the voltaic cell leads to the invention the electric battery. 1791 – Luigi Galvani discovers galvanic electricity and bioelectricity through experiments following an observation that touching exposed muscles in frogs' legs with a scalpel which had been close to a static electrical machine caused them to jump. He called this ...
English inventor Francis Ronalds built the first working electric telegraph. 1820: Danish physicist Hans Christian Ørsted accidentally discovered that an electric field creates a magnetic field. 1820: One week after Ørsted's discovery, French physicist André-Marie Ampère published his law. He also proposed the right-hand screw rule. 1821
1820: Hans Christian Ørsted discovers that a current passed through a wire will deflect the needle of a compass, establishing the deep relationship between electricity and magnetism (electromagnetism). 1820: Michael Faraday and James Stoddart discover alloying iron with chromium produces a stainless steel resistant to oxidising elements .
1812 – Hans Christian Ørsted formulates the Latin-German mixed term Gedankenexperiment, meaning 'thought experiment', a method used since antiquity. 1815 – An optimal design for polynomial regression is published by the French logician Joseph Diaz Gergonne.
1820 – Hans Christian Ørsted discovers the connection between electricity and magnetism. 1843 – James Prescott Joule measures the equivalence between mechanical work and heat, resulting in the law of conservation of energy. 1845 – Christian Doppler demonstrates the Doppler shift.
Hans Christian Ørsted. In the first half of the 19th century many very important additions were made to the world's knowledge concerning electricity and magnetism. For example, in 1820 Hans Christian Ørsted of Copenhagen discovered the deflecting effect of an electric current traversing a wire upon a suspended magnetic needle. [11]
Hans Christian Ørsted's discovery of the magnetic effect of electric currents in 1820 was immediately recognised as an important advance, although he left further work on electromagnetism to others. André-Marie Ampère quickly repeated Ørsted's experiment, and formulated them mathematically (which became Ampère's law) . Ørsted also ...