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General
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Written by Daniel
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Wednesday, 02 January 2008 11:33 |
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Scientists observe how superconductivity truly works; advance efforts to find high temperature superconducting materials Jason Mick & Kristopher Kubicki - January 2, 2008 11:12 AM
DailyTech One of the greatest mysteries of science is superconductivity. Superconductivity, a term that entered popular lexicon with the advent of magnetic levitation, is an incredible phenomena. At extremely low temperatures certain materials known as superconductors lose almost all resistance to electricity and experience exclusion of the inner magnetic field -- also known the Meissner Effect.
Traditional electric-conducting materials such as gold or copper have impurities that prevent them from superconducting. These materials have a discrete resistance, even at absolute zero -- a theoretical point of zero degrees Kelvin, or -273.14 degree Celsius. Superconductors experience resistance up to a critical temperature, known as Tc. Once the temperature drops to this point, the materials begin to superconducting and reach a point of zero resistance.... More Comment in the Forums
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