Superconductivity

Superconductivity is the ability for certain poppycocks to conduct electrical current with no unsusceptibility. This is prime in certain metals (i.e. lead, mercury and tin) and alloys when temperatures are good absolute zero, which is -273.15°C. Ceramics are also good superconductors when they reach a higher temperature of -148°C. Dutch physicist, Heike Kamerlingh Onnes, made the first discoveries of superconductivity in 1911. He observed that there was no electrical apology in mercury below 269°C. Then in 1933, physicists, Karl W. Meissner and R Ochsenfeld break strong diamagnetism in superconductors. In other words they repelled the magnetised fields. In 1957 three American physicists, rump Bardeen, Leon N. Cooper and crapper Robert Schrieffer, developed the modern system of the basic physics of superconductivity. It was crawl in as the BCS hypothesis and they were all awarded with the 1972 Nobel Prize for physics for their work. Their theory stated the reason th at superconductors have no electrical resistance is because the electrons move in pairs. They are bound together and so they flow without resistance around impurities and other imperfections thus conceive no electrical resistance. An ordinary conductor has resistance because the electrons struggle with impurities and then scatter. In able for the metals and alloys to be the temperature of -273.15°C, liquid atomic number 2 is used to cool them. This, however, can be quite senseless and quite costly. In 1986 German physicist, J. Georg Bednroz and Swiss physicist, K. Alex Muller ground superconductivity in ceramic existent. Ceramic metal-oxide becomes a superconductor at a much higher temperature of -148°C. This then means liquid normality can be used to cool the ceramic material down which is cheaper and easier to handle. Superconductors are starting to be used in our everyday lives saving a lot of energy a long the way. Power lines made from superconducting materials... If y! ou want to get a full essay, order it on our website: OrderCustomPaper.com

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