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by greenmountin
4324 days ago
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translated: "Just an aside: note that the speed that light travels in any medium is slower than it travels in vacuum. Its speed is no longer 3e8 m/s, but a third less in, for example, FR-4 microstrip (a popular prototype board dielectric). The effective speed is about 6 inches per ns, or at least, 6 inches per cycle of a 1 GHz clock." |
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