Admiral Grace Hopper Explains the Nanosecond
5 人推荐 · 跨 5 个月 · 2020–2025
中文导读
计算机先驱 Grace Hopper 海军准将手持一段约 11.8 英寸的电线，具象化展示光在 1 纳秒内走过的物理距离，让抽象的十亿分之一秒变得触手可及。
为什么 HN 推它
社区常用来形象解释物理延迟极限的经典名场面：光速有限，距离和硬件排布在高性能计算中绝非小事。
「《Grace Hopper 准将讲解纳秒》是讲这个概念最好的例证，片段只有两分钟。」HN 网友原话：Admiral Grace Hopper Explains the Nanosecond" is a good illustration of this (segment is only 2m)
英文原摘要（HackerTube / Claude 整理）
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 uses it to illustrate physical latency limits and why performance and distance matter in computing.
HN 上的提及
Learn from Admiral Grace Hopper
For those that haven't seen it
the industry has collectively decided that Grace Hopper is an old codger who doesn't need to be listened to.
Pretty reminiscent of Grace Hopper's nanosecond lecture
Admiral Grace Hopper Explains the Nanosecond" is a good illustration of this (segment is only 2m)