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Art wrote:
"The fact that this old book is being republished by the publisher is to obtain money and should not be seen of (as) verification of its contents." I`ve had both editions. They are identical in content (no corrections). Terman says essentially the same things about "skin effect". Griffith`s examples and drawings are more extensive. Charges are moved to the surface by reduced inductive opposition there. Imagine a wire made of many concentric layers. Each layer`s current produces inductive opposition. This is generated by the current that layer carries. The inner layer is encircled by all the lines of all the layers while the exterior layer is encircled by only the lines generated by its current and none from the lines generated by the current in the layers under it. Thus, there is little inductive opposition to current on the surface of the wires. Best regards, Richard Harrison, KB5WZI |
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