beecee Posted November 24, 2018 Share Posted November 24, 2018 https://phys.org/news/2018-11-defy-19th-century-law-physics.html#jCp Researchers defy 19th Century law of Physics in 21st century boost for energy efficiency: November 21, 2018 by Anna Ford, University of Sussex: Research led by a University of Sussex scientist has turned a 156-year-old law of physics on its head in a development which could lead to more efficient recharging of batteries in cars and mobile phones. Dr. Jordi Prat-Camps, a research fellow at the University of Sussex, has for the first time demonstrated that the coupling between two magnetic elements can be made extremely asymmetrical. Working with colleagues from the Austrian Academy of Sciences and University of Innsbruck, Dr. Prat-Camps' research rips up the physics rule book by showing it is possible to make one magnet connect to another without the connection happening in the opposite direction.Read more at: https://phys.org/news/2018-11-defy-19th-century-law-physics.html#jCp the paper: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.213903 Circumventing Magnetostatic Reciprocity: A Diode for Magnetic Fields: ABSTRACT: Lorentz reciprocity establishes a stringent relation between electromagnetic fields and their sources. For static magnetic fields, a relation between magnetic sources and fields can be drawn in analogy to the Green’s reciprocity principle for electrostatics. So far, the magnetostatic reciprocity principle remains unchallenged and the magnetostatic interaction is assumed to be symmetric (reciprocal). Here, we theoretically and experimentally show that a linear and isotropic electrically conductive material moving with constant velocity is able to circumvent the magnetostatic reciprocity principle and realize a diode for magnetic fields. This result is demonstrated by measuring an extremely asymmetric magnetic coupling between two coils that are located near a moving conductor. The possibility to generate controlled unidirectional magnetic couplings implies that the mutual inductances between magnetic elements or circuits can be made extremely asymmetric. We anticipate that this result will provide novel possibilities for applications and technologies based on magnetically coupled elements and might open fundamentally new avenues in artificial magnetic spin systems. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Do they? What would be the full repercussions of such a discovery? Any other comments? Link to comment Share on other sites More sharing options...
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