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m 12 female physicists you need to know about - Australian Geographic Reflecting the fundamental importance and applicability of Magnetic resonance imaging[215] in medicine, Paul Lauterbur of the University of Illinois at UrbanaChampaign and Sir Peter Mansfield of the University of Nottingham were awarded the 2003 Nobel Prize in Physiology or Medicine for their "discoveries concerning magnetic resonance imaging". He wrote a manual of practical chemistry that reveals his . Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. Albert Einstein, 1879-1955. What Maxwell did was to combine the laws of electricity and . [141] Later alternators were designed for varying alternating-current frequencies between sixteen and about one hundred hertz, for use with arc lighting, incandescent lighting and electric motors. As this produced in the coils of the wire an alternating current, Pixii arranged a commutating device (commutator) that converted the alternating current of the coils or armature into a direct current in the external circuit. During the late 1890s a number of physicists proposed that electricity, as observed in studies of electrical conduction in conductors, electrolytes, and cathode ray tubes, consisted of discrete units, which were given a variety of names, but the reality of these units had not been confirmed in a compelling way. E Comic strip about Scientist contribution to the development of electromagne [122] Maxwell had studied and commented on the field of electricity and magnetism as early as 1855/6 when On Faraday's lines of force[123] was read to the Cambridge Philosophical Society. This theorem was extended for terms of all orders by Lorentz in 1904.