To give a simple illustration of physisorption, we can first consider an adsorbed hydrogen atom in front of a perfect conductor, as shown in Fig . 1.
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In a perfect conductor with no resistance ( a superconductor ), surface eddy currents exactly cancel the field inside the conductor, so no magnetic field penetrates the conductor.
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With a perfect conductor ( i . e ., zero resistivity ), all of the current would flow at the surface, with no penetration into and through the conductor.
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A . Because, according to Van Nostrand's Scientific Encyclopedia ( Van Nostrand Reinhold ), they fall somewhere amid a range of substances from the perfect conductor to the insulators.
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Perfect conductors and superconductors have in common the fact that if you expose them to a magnetic field, the currents this produces in the material exactly cancel out the magnetic field.
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Superfluids like liquid helium are perfect conductors of heat; in their superfluid state it is impossible to set up a temperature gradient within the fluid . talk ) 20 : 31, 8 January 2006 ( UTC)
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So we're replacing two nodes with a galvo between them with two nodes with a perfect conductor between them, so we could continuously deform the circuit until those two nodes merged ( as there is now nothing between them ).
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*The theoretical difference between a perfect conductor and a superconductor is that a superconductor is a separate state of matter, and is produced by quantum physical effects ( electrons can be bound together into Cooper pairs through interactions with phonons ).
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:: At sufficiently high electric fields, even the best insulators will start conducting ( Breakdown _ voltage )-a perfect conductor exists in reality ( superconductor ) but a perfect insulator doesn't . talk ) 06 : 33, 29 February 2012 ( UTC)
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Coulomb wrote seven important works on electricity and magnetism which he submitted to the Acad�mie des Sciences between 1785 and 1791, in which he reported having developed a theory of attraction and repulsion between charged bodies, and went on to search for perfect conductors and dielectrics.
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