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从赫伯特·威尔斯1895年发表了他的著名小说《时间机器》(TheTimeMachine)以来,时间旅行便成为科幻小说中的热门话题。那么,进行时间旅行这种说法到底能否真正实现呢?就这一问题,科学家们给出了解释:时间旅行绝非没有可能——大约一个世纪以前,科学家们就通过研究发现,通过所谓的时空隧道,进入未来是可能的事情。爱因斯坦于1905年发明了相对论,这一理论就预言说,随着观察者观察角度的不同,时间是可以收缩的。如果你飞来飞去,你就会发现相对于呆在家里不动的邻居,你已经走在了时间的前面,虽然这种超越只有十亿分之一秒,而且这微小的时间差别很难被人觉察到,但是通过原子钟,还是可以很容易地测出这一差别的。早在1975年,美国马里兰大学的科学家卡罗尔·艾列同时放置了两个原子钟,一个放在飞机上,飞了数小时;一个放在地球上。当飞机上的原子钟返回地球时,艾列将其与放在地球上一动没动的原子钟对照,她发现,飞机上的原子钟的时间慢了一秒。
Since Herbert Wells published his famous novel “The Time Machine” in 1895, time travel has become a hot topic in science fiction. So, can the idea of time travel actually be realized? On this issue, scientists gave an explanation: Time travel is by no means impossible - about a century ago, scientists discovered through research that through so-called Space and time tunnels are possible things in the future. Einstein invented the theory of relativity in 1905. This theory predicts that time can be shortened as observers observe different angles. If you fly around, you will find that you have walked in front of the time relative to the homeless neighbors who stay at home, although this transcendence is only a billionth of a second, and this tiny time difference is difficult It was noticed, but with the atomic clock, this difference can be easily measured. As early as 1975, Carroll Ellie, a scientist at the University of Maryland, placed two atomic clocks, one on a plane and flew for hours, and one on the earth. When the atomic clock on the plane returned to Earth, Ereley compared it to a moving atomic clock placed on the earth. She found that the atomic clock on the plane was slow for one second.