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特殊相对论如何运作

双胞胎悖论麻烦

由于处理框架更改的方式,许多人在双胞胎悖论中遇到麻烦。在这种情况下,框架更改后,约翰的时钟跳高(9.6至20.4小时)是问题所在。这里确实没有问题。如果要集成加速度以在转弯期间使用各种惯性帧,则可以完成(结果相同)。另一种常见的方法是想象当约翰到达周转的地步时,太空中的其他人都会经过。这个人以与约翰旅行的速度相同的速度前往猎人,因此无需再考虑约翰。关键事实是,如果我们然后回到替补的框架中,看着他的钟表猎人,这将表明,当替代人开始他的猎人之旅时,已经记录了一段时间。我们应该走多远?自从约翰在即将上任的旅行中出去了12个小时以来,我们应该在替补框架中回去12个小时。在这个替代品的起点,他的猎人时钟将读10.8小时。 This is extremely important. It clearly shows that both twins or the twin and the substitute observe the other as having slower times. The big shift occurs when the frame of reference is changed. This means that both observe the other to have a slower time during the actual outgoing and return trips, but there is a shift during the frame change that more than makes up for John's account of Hunter's slowly running clock. After the frame change, the damage has been done. John will still observe Hunter's clock to run slow, but it will never slow down enough to compensate for the 10.8 hours that were perceived during the frame change. Is this time jump a physical occurrence? No. The time jump occurs because when John changes frames, he is no longer using the same event as a reference. When John made his turnaround, the event in Hunter's frame that John thought was simultaneous with his turnaround changed. John's frame change caused this confusion because his new frame uses a different time for the event in Hunter's frame. More clearly, the turnaround event in Hunter's frame has a different time value for the outgoing leg and the return leg, as perceived by John. Keep in mind that in the above references to Hunter's frame, I'm really talking about what John thinks Hunter's frame time would be. This time difference is only apparent to John because it is his frame change that causes the discrepancy. In Hunter's frame, nothing changes for Hunter when John changes frames. Here again, by realizing that the two events are not simultaneous, the paradox is resolved. The point I am trying to emphasis is that there are a variety of ways to handle the paradox. All of the methods yield the same result, but if you actually consider the simultaneity of the situation, then the how's and why's become more clear.

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