作者查詢 / Atropos0723
作者 Atropos0723 在 PTT [ Physics ] 看板的留言(推文), 共55則
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15F推: 這題目是不考慮大地曲率的,用第一宇宙速度就犯規了02/28 22:05
5F推: 我只覺得,記者在寫這種新聞之前可以自己先試著搞懂02/14 19:50
6F→: 一些東西再下筆可以嗎?這篇報導很明顯就是完全沒想02/14 19:50
7F→: 只是東抄西抄而成的一篇"科技新聞",沒人說要全懂,02/14 19:51
8F→: 但是即便是做翻譯也至少要知道自己在寫些什麼才下筆02/14 19:52
9F→: 否則便會變成跟這篇新聞一樣的東西,乍看之下好像寫02/14 19:53
10F→: 了很多,我也看了很多,但是沒有可串在一起的內容。02/14 19:53
8F推:"各自被分配多少熱能"與做功有關嗎?11/24 10:10
9F→:所謂做功就是指動能的變化量,摩擦力做負功是將動能11/24 10:11
10F→:變成熱能,並沒有提到地面與物體各自分配多少熱的問題11/24 10:12
12F→:sawatari的算法我看不出有任何問題啊11/24 10:13
3F推:不應該說四種作用力之外還有其他作用,應該說到了分子01/30 21:49
4F→:層級要利用基本作用力計算是徒勞的,不如使用某些近似01/30 21:50
5F→:方法,也就是化學鍵來解釋分子行為,有些生物學家主張01/30 21:51
6F→:在分子、細胞生物學的階段,主控一切的要素的確是物理01/30 21:52
7F→:作用力,但是推廣到個體時則會迸出全新的基本規律,他01/30 21:54
8F→:們把這種從無到有的現象稱為突現(emerge),例如演化,01/30 21:55
9F→:但也有些生物學家還是主張生物學的理論就是站在物理學01/30 21:56
10F→:之上的應用,生物學的基本規律透過化約,極端來說可以01/30 21:57
11F→:總結為物理學上的定律。01/30 21:57
22F推:目前的電力傳輸系統大概喪失多少比率的電能啊?05/15 02:02
3F→:是「地球引力扭曲時空」還是「質量扭曲時空」啊?05/05 19:46
5F→:我記得重力是人為了解釋質量造成時空扭曲所想像出來的05/05 19:49
9F推:現象啊....實驗都是一樣結果05/05 19:53
11F推:欲拒還迎=傲嬌=萬物之理05/02 00:49
15F推:為何交流電對於心臟的干擾比直流電來得嚴重呢?04/16 00:16
16F→:http://ppt.cc/Zt@; 另外,這份簡報中有記載電壓在04/16 00:19
17F→:250V以下,AC比DC危險;但電壓提升後,DC危險性則更高04/16 00:21
18F→:這是甚麼原因呢? 而簡報中亦提到,頻率越高的AC,其04/16 00:22
19F→:危險性越低,這似乎是呼應了集膚效應的說明。也就是04/16 00:23
20F→:頻率越高,電流越集中於表面,因此對人體影響越小。04/16 00:23
42F推:原來是AC的頻率與心肌電流共振,干擾心肌抽動04/16 13:54
2F推:不是藉由機械裝置,將靜摩擦力轉換為滾動力矩嗎?02/28 10:01
9F推:話說Tycho是怎麼翻成第谷的.....02/27 17:27