原子时标:闰秒和取消闰秒
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摘要: 为什么用原子秒(秒长)和原子时(时标)取代天文秒和天文时?目前,经过闰秒的原子时,即协调世界时,是全世界通用的时标。那么,为什么引入闰秒?又为什么要取消闰秒?从时间计量的角度,如何解读最近53年闰秒背后反映的地球自转数据?取消闰秒,时间会“日夜颠倒”吗?最后,人们还会经历几次“闰秒”?
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