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 weedy 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 protection in mercury below 269°C. Then in 1933, physicists, Karl W. Meissner and R Ochsenfeld name strong diamagnetism in superconductors. In other words they repelled the charismatic fields. In 1957 three American physicists, rump Bardeen, Leon N. Cooper and tin Robert Schrieffer, developed the modern system of the basic physics of superconductivity. It was turn in as the BCS surmise and they were all awarded with the 1972 Nobel Prize for physics for their work. Their theory stated the reason that su perconductors 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 believe no electrical resistance. An ordinary conductor has resistance because the electrons difference 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 unproductive and quite costly. In 1986 German physicist, J. Georg Bednroz and Swiss physicist, K. Alex Muller effectuate superconductivity in ceramic corporeal. Ceramic metal-oxide becomes a superconductor 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 t! o get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay