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 tight-fitting 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 subway system in mercury below 269°C. Then in 1933, physicists, Karl W. Meissner and R Ochsenfeld come across strong diamagnetism in superconductors. In other words they repelled the modify fields. In 1957 three American physicists, rump Bardeen, Leon N. Cooper and stool Robert Schrieffer, developed the modern system of the basic physics of superconductivity. It was crawl in as the BCS scheme and they were all awarded with the 1972 Nobel Prize for physics for their work. Their theory stated th e reason that 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 viewing no electrical resistance. An ordinary conductor has resistance because the electrons interlocking 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 indolent and quite costly. In 1986 German physicist, J. Georg Bednroz and Swiss physicist, K. Alex Muller name superconducti vity in ceramic bodily. Ceramic metal-oxide! becomes a superconductor at a much higher temperature of -148°C. This then means liquid due north 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 you want to get a full essay, order it on our website: OrderCustomPaper.com

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