Admiral Grace Hopper Explains the Nanosecond
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Admiral Grace Hopper holds up a length of wire to show how far light travels in a nanosecond, about 11.8 inches. She explains how she made the idea concrete to people who could not picture a billionth of a second.
HN 推荐的原因： HN uses it to illustrate physical latency limits and why performance and distance matter in computing.
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