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 stingy 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 opposite in mercury below 269°C. Then in 1933, physicists, Karl W. Meissner and R Ochsenfeld reveal strong diamagnetism in superconductors. In other words they repelled the alter fields. In 1957 three American physicists, rump Bardeen, Leon N. Cooper and bathroom Robert Schrieffer, developed the modern system of the basic physics of superconductivity. It was get along as the BCS speculation and they were all awarded with the 1972 Nobel Prize for physics for their work. Their theory stated the 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 consider no electrical resistance. An ordinary conductor has resistance because the electrons date with impurities and then scatter. In able for the metals and alloys to be the temperature of -273.15°C, liquid helium is used to cool them.

This, however, can be quite unsubstantial and quite costly. In 1986 German physicist, J. Georg Bednroz and Swiss physicist, K. Alex Muller appoint superconductivity in ceramic f abric. Ceramic metal-oxide becomes a superco! nductor at a much higher temperature of -148°C. This then means liquid 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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