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作者 HDT 在 PTT [ sky ] 看板的留言(推文), 共43則
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2F→:兩位都能連署,最後看連署人數是否達標而已03/06 18:02
10F推:Johnson Space Center 拍攝地點12/25 09:40
5F推:R.I.P08/27 22:43
11F推:當小學生不懂啥是波長 再讓他懂波長就好啦03/21 10:38
24F→:根據行星的定義 這頂多是超巨大的隕石吧= =05/19 23:12
25F→:恆星都死了 行星怎辦重要嗎?05/19 23:13
3F推:站在一個物理學家或天文學家的角度 宇宙之外或大霹靂之前一點10/24 01:15
4F→:也不重要10/24 01:16
17F推:借轉物理版10/21 19:35
24F推:這是新聞?!10/22 12:15
1F推:你這跟拿電風扇來驅動帆船有啥不一樣10/10 18:10
2F→:光子打到帆上形成光壓 動量守恆 對光源來說也有個向後的力10/10 18:11
3F→:因為你光源是固定在船上 所以力平衡 哪都動不了10/10 18:11
6F推:OK 我看懂了= = 抱歉10/12 01:11
7F→:不過這樣的效果還沒有把光源固定在船上來的好10/12 01:12
8F→:畢竟會隨著距離的平方作衰減不是嗎?10/12 01:13
2F推:...微中子吧= =07/22 14:44