Daily Archives: August 25, 2010

Why curl of coservative fields is zero


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Skin Effect


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Answer This

If earth is a big magnet, then why does not all the iron stick to it? If you know the answer, then post in the “comments” section.

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BCS theory

At sufficiently low temperatures, electrons near the Fermi surface become unstable against the formation of Cooper pairs. Cooper showed such binding will occur in the presence of an attractive potential, no matter how weak. In conventional superconductors, an attraction is … Continue reading

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skin effect

skin effect is ac flows on the surface of conductor or upto a certain depth. but why so?  flow of current is due to movement or moment of electron… is there no free electron in bulk of conductor,  if no then why … Continue reading

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