29-April-2007, 10:53 PM
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Order of Kilopi
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Join Date: Feb 2004
Location: Greater London
Posts: 3,379
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Quote:
Originally Posted by truedream
A material that is strongly attracted to a magnet is said to have a high permeability. Iron and steel are two examples of materials with very high permeability, and they are strongly attracted to magnets. Liquid oxygen is an example of something with a low permeability, and it is only weakly attracted to a magnetic field. Water has such a low permeability that it is actually slightly repelled by magnetic fields.
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Paramagnetism, ferromagnetism and diamagnetism.
Look up chapters 34 to 37 in Feynman's Lectures on Physics, Vol. 2.
Quote:
Originally Posted by truedream
Science had missed important subject magnetism of atom and misunderstood about existence of Magnetism in atom. But Present science have seen the magnetism of atom indirectly in the name of gravity,weight,pressure, density, positive or negatively charged, chemical bonding, etc.
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Have a look at chapter 8 in Eisberg & Resnick's Quantum Physics of Atoms, Molecules, Solids, Nuclei, and Particles.
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"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)
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