| 11. | You have to look at the skin depth.
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| 12. | In a good conductor, skin depth is proportional to square root of the resistivity.
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| 13. | The overall resistance of the better conductor remains lower even with the reduced skin depth.
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| 14. | Skin depth also varies as the inverse square root of the permeability of the conductor.
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| 15. | For effective shielding from a magnetic field, the shield should be several skin depths thick.
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| 16. | Especially interesting how the higher the frequency, the thinner the skin depth necessary to shield.
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| 17. | There are also physical limits to generating eddy currents and depth of penetration ( skin depth ).
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| 18. | At some microwave wavelengths, the skin depth is less than the thickness of even the thinnest foil.
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| 19. | The surface resistance in a thick metal conductor is proportional to the resistivity divided by the skin depth.
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| 20. | Household foil is much thinner than the skin depth in aluminum at the frequencies used by an induction cooker.
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