[11], In his investigations of the peculiar manner in which iron filings arrange themselves on a cardboard or glass in proximity to the poles of a magnet, Faraday conceived the idea of magnetic "lines of force" extending from pole to pole of the magnet and along which the filings tend to place themselves. In December 1938, the German chemists Otto Hahn and Fritz Strassmann sent a manuscript to Naturwissenschaften reporting they had detected the element barium after bombarding uranium with neutrons;[171] simultaneously, they communicated these results to Lise Meitner. He discovered that a changing magnetic field will induce a changing electric field and vice-versa. [11], The Leyden jar, a type of capacitor for electrical energy in large quantities, was invented independently by Ewald Georg von Kleist on 11 October 1744 and by Pieter van Musschenbroek in 17451746 at Leiden University (the latter location giving the device its name). Aldebaran 2. From this, Ohm determined his law of proportionality and published his results. His paper on the particulate nature of light put forward the idea that certain experimental results, notably the. Zygmunt Florenty Wrblewski conducted research into electrical properties at low temperatures, though his research ended early due to his accidental death. The photograph electrified the general One group agreed with Volta that the electric current was the result of an electromotive force of contact at the two metals; the other adopted a modification of Galvani's view and asserted that the current was the result of a chemical affinity between the metals and the acids in the pile. What is the contribution of Heinrich Hertz in electromagnetic wave theory? In 1864 James Clerk Maxwell of Edinburgh announced his electromagnetic theory of light, which was perhaps the greatest single step in the world's knowledge of electricity. He is rightly acclaimed as the father of modern physics. Aepinus formulated a corresponding theory of magnetism excepting that, in the case of magnetic phenomena, the fluids only acted on the particles of iron. Retrieved October 17, 2009. He discovered electromagnetic induction, which led to the invention of the dynamo, the forerunner to the electric generator. He received many medals and decorations, including the Lgion d'honneur. [130], Maxwell extended this view of displacement currents in dielectrics to the ether of free space.

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