光速飛行... - 星際之門
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By Tom
at 2010-12-14T00:38
at 2010-12-14T00:38
Table of Contents
最近看了 "與霍金一起了解宇宙" Into the Universe With Stephen Hawking
一共三集,推薦大家一定要抽空看一下,真的很棒!
裡面第二集中,有提到光速飛行的事情,
直接看光速飛行,感覺上似乎還好,就是飛的很快而已,
可是其實假設SGU真能光速飛行,
(先不討論主角們的質量會變暴大把自己壓死,霍金介紹時也先暫時忽略這現象)
當光速飛行時,可不是單純飛的比較快,而是存在的一個很大的問題!
那就是SGU的主角們在飛船上待一天,可能地球上的親友就都死光了!!!
會這樣是因為這宇宙存在著一個規則:光速不可超越 (有質量的東西)
(Why? 我也不知道,霍金沒說)
以前就有人提出問題,在一台光速近似的飛船上開槍,子彈是否就會突破光速?
答案是:不會的! 世界為了維護光速不可超越的這原則,會讓光速近似的飛船上時間
流動變的超慢,導致子彈飛的速度也變成超慢...
當然,這快慢是相對值,對於不在飛船上的人,才會覺得船上的人很慢,
而在船上的人是沒感覺的,因為電流也變慢,神經傳導也變慢,感知也變慢了。
所以SGU上的人感覺過了普普通通的一天,但是地球上可能已經竟過好幾年了...
不過影集忽略這個現象,讓雙方的時間是同步的...XD
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