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作者 m06 在 PTT [ sky ] 看板的留言(推文), 共20則
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20F→:就算有 也未必找得到地球07/14 21:30
3F→:不太懂一樓 接近光速的速度可以累加吧? 只是不是單純的相加05/28 01:41
4F→:另外原PO的問題應該是不會 因為太空船/手電筒的光都一樣是光速05/28 01:43
7F→:認真的問..這樣還算衛星嗎＠＠? 感覺比較像探測船之類的..05/25 21:12
6F→:royerrick大說的是光速 不是近光速吧~05/14 22:20
7F→:提供另一個想法 直接在地球投擲0.2c物 站在反向0.9c星球上觀測05/14 22:21
7F→:理論上 有靜止質量的都達不到光速..硬要達到光速會變成無限重05/14 22:17
25F→:看你要多精準 還是只要大概的概念..精準來說沒有同平面04/19 00:47
7F→:有種說法光速好像會隨時間改變..04/04 17:00
8F→:另外你把黑洞質量是為無限要看跟什麼比 對我們周遭事物是趨近04/04 17:01
9F→:無限沒錯 不過對另一個黑洞 或者星系 中子星而言 不能視為無限04/04 17:02
10F→:接我第一句話 時間空間的產生可能是大爆炸後才開始有意義04/04 17:03
11F→:所以速度的定義也有待商榷 光速我比較傾向於"該時空中 所存在04/04 17:05
12F→:最快的速度" 初爆炸時可能快上許多04/04 17:06
17F→:f=ma m會增加03/31 03:04
8F→:目前蟲動是未知狀態..你說的其他部分也是未知狀態03/31 02:59
9F→:從因果論來看應該都不能回到過去..03/31 03:00
10F→:不過就你的觀點來看 可以想像當你速度越快 你本身時間走的越慢03/31 03:00
11F→:當你達到光速 時間慢到停止..超越時 你的時間變成負的前進03/31 03:01
3F→:類地的定義是啥阿..09/29 02:23
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