| 21. | A measure of the depth to which radiation can penetrate the shield is the so-called skin depth.
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| 22. | At low frequencies, the SPP penetration depth into the metal is commonly approximated using the skin depth formula.
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| 23. | Where the thickness is less than the skin depth, the actual thickness can be used to calculate surface resistance.
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| 24. | So earths magnetic field will make its way through . ( A super conductor will have 0 skin depth ).
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| 25. | The appropriate skin depth is not just the depth at the fundamental, but also the skin depths at the harmonics.
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| 26. | The appropriate skin depth is not just the depth at the fundamental, but also the skin depths at the harmonics.
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| 27. | :The skin depth for a 1 GHz signal in seawater is roughly 1 centimeter ( about half an inch ).
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| 28. | This reduces the skin depth for iron to about 1 / 38 that of copper, about 220 micrometres at 60 Hz.
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| 29. | The skin depth is the distance which the wave can travel before its " amplitude " reduces by that same factor.
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| 30. | At 500 kHz, the skin depth in copper is about a dimension smaller than the typical wires used in a power supply.
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