Travel at light speed.

Francis

2009-01-04 6:53 am

I already heard that by the Relativity Theory,
Time is slower when travelling at high speed.

Is it necessary that it travel in straight line?

If a spacecraft travel at light speed around the Earth for 100 years, take off in 2009 (on Earth) and Land in 2109 (on Earth), how many years have passed on the Spacecraft?

更新1:

Is time stop at light speed? If yes, space travel is possible however far is the destination. Right?

回答 (1)

myisland8132

2009-01-04 7:54 am

✔ 最佳答案

Time is slower when travelling at high speed.
正確
Is it necessary that it travel in straight line
不是。不過推導時用單一方向x軸方便推導算式罷了。總之太空船越接近光速﹐太空船上的時鐘運行得越慢
If a spacecraft travel at light speed around the Earth for 100 years, take off in 2009 (on Earth) and Land in 2109 (on Earth), how many years have passed on the Spacecraft?
是0。由公式

圖片參考：http://www.eaglefantasy.cn/wp-content/cache/tex_26123e9aab3a61d7726d0ec4d1e69fa6.gif

假設deltaT是100﹐u=c(光速)則deltaT'=0故太空船上的時鐘經過的時間是0!!!

2009-01-03 23:55:02 補充：
圖:http://www.eaglefantasy.cn/archives/211

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