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In 1971, after Einstein's death, two scientists were able to carry out a crucial experiment. They used two atomic clocks, synchronized them, and placed one on a plane, while the other stayed in the same location on Earth. The plane then flew around the world for 80 hours. According to Einstein's theory, the clock on the plane would be expected to have lost time, due to being in motion over 80 hours compared to the clock on the ground. When they brought the clocks together and made a comparison, the clock on the plane was indeed a few nanoseconds slower than the other clock.
愛因斯坦去世后,1971年,兩名科學家完成了一項重要實驗。他們使用兩個原子鐘,將時間調(diào)成一致。其中一個被放在飛機上,而另一個則置于地球上的原來地方。隨后飛機環(huán)繞全球飛行了80個小時。按照愛因斯坦理論,相對于地面上的時鐘,飛機上的時鐘會因為80個小時的運動而減少時間。當他們將兩個時鐘拿到一起比較時,飛機上的時鐘確實較另一只慢了幾毫微秒。