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作者 yeahhuman 在 PTT [ Physics ] 看板的留言(推文), 共812則

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[問題] 量子力學的數學章節

[ Physics ]34 留言, 推噓總分: +20

作者: Schrodingers - 發表於 2011/09/26 23:27(14年前)

7^F推yeahhuman:其實頗有笑點的...之前看你問的問題再對照id= =09/27 00:17

[請益] 抽桌巾

[ Physics ]19 留言, 推噓總分: +10

作者: xmax010681 - 發表於 2011/09/16 23:35(14年前)

11^F推yeahhuman:我怎麼覺得這要考慮的是靜摩擦與動摩擦?09/17 03:30

12^F→yeahhuman:這現象的機制是靜與動摩擦造成效果大小是衝量造成09/17 03:31

13^F→yeahhuman:快到一個程度時就保證物體只和桌布有動摩擦力09/17 03:32

14^F→yeahhuman:這時才討論物體"越"不會移動09/17 03:33

[閒聊] 最硬金屬!?

[ Physics ]71 留言, 推噓總分: +25

作者: keroro321 - 發表於 2011/09/03 15:52(14年前)

28^F推yeahhuman:我很好奇那金屬怎麼加工出來的那金屬不只強在材料09/04 15:46

29^F→yeahhuman:我按畫面估計一下它的密度有破30g/cm 比現在的任何金屬09/04 15:48

30^F→yeahhuman:密度都還要高以鐵來說甚至只從7起跳09/04 15:48

31^F→yeahhuman:那個鑽機怎麼說是被磨平的? 如果是被磨平的連比都不用比09/04 15:49

32^F→yeahhuman:有做過金屬加工就知道只要被磨平什麼都鑽不了09/04 15:49

33^F→yeahhuman:我想那是那鑽頭本身的構造它如果要在堅硬岩層鑽孔09/04 15:51

34^F→yeahhuman:不可能讓應力集中才鑽孔這樣我是要鑽幾次才夠放炸藥啊09/04 15:52

57^F推yeahhuman:只要是晶格就一定有某個角度最脆弱09/05 01:08

68^F推yeahhuman:linijay你也要考慮到前兩個鑽頭能不能承受衝擊力= =09/06 16:51

69^F→yeahhuman:搞不好上下震動撞個一下就鑽頭就壞了09/06 16:52

[新聞] 以雷射造雨科學家：有望

[ Physics ]10 留言, 推噓總分: +8

作者: joe70136 - 發表於 2011/09/01 13:23(14年前)

2^F推yeahhuman:我猜是讓空氣中的氮氣與水和氧氣化合09/01 14:36

3^F→yeahhuman:頗酷的09/01 14:36

[問題] 如何讓水往上流?

[ Physics ]31 留言, 推噓總分: +12

作者: david7796 - 發表於 2011/08/31 08:54(14年前)

21^F推yeahhuman:我覺得裝個濾水器也不貴可以用很久...08/31 23:36

22^F→yeahhuman:也不用裝到多高級的普通就很夠用了08/31 23:36

23^F→yeahhuman:長久成本算下來應該抵得過這麼費時費力的過程08/31 23:37

25^F推yeahhuman:他是往上吸虹吸管還是要建立在水源比終點高09/01 00:22

Re: [問題] 關於書籍：心靈與科學的橋

[ Physics ]221 留言, 推噓總分: +47

作者: QuantumGravi - 發表於 2011/08/30 18:08(14年前)

42^F推yeahhuman:推08/30 22:50

[問題] 機車前後輪剎車之差別

[ Physics ]55 留言, 推噓總分: +19

作者: kevin60405 - 發表於 2011/08/26 21:19(14年前)

24^F推yeahhuman:前輪鎖死是在轉彎時特別容易完全失控08/27 00:11

25^F→yeahhuman:我自己的經驗...鎖死後輪頂多就是亂偏08/27 00:15

26^F→yeahhuman:當然跟輪胎地面等等一定都有關係我認為無法下定論08/27 00:16

29^F→yeahhuman:我覺得影片中只不過是在一種環境條件下的結果08/27 00:17

30^F→yeahhuman:也許前輪容易煞住但是也容易完全失控08/27 00:18

32^F→yeahhuman:其實我講的轉彎應該是指輪胎並非完全正的08/27 00:19

33^F→yeahhuman:鎖死後輪頂多跟影片一樣鎖前輪失控就不知道飄到哪去了08/27 00:20

39^F推yeahhuman:影片的示範是有問題的...他敢不敢稍微偏一下然後鎖前輪08/27 00:37

40^F→yeahhuman:重點是正常人騎車哪有可能煞車時還要保證輪胎是正的08/27 00:37

[請益] 請問看完這段影片各位版大的想法

[ Physics ]23 留言, 推噓總分: +7

作者: atwin0613 - 發表於 2011/08/24 04:45(14年前)

1^F推yeahhuman:自從Discovery會播鬧鬼的屋子奇怪的生物記錄片08/24 11:34

2^F→yeahhuman:我就不想相信Discovery了08/24 11:35

3^F→yeahhuman:快跟我小時候看的寰宇搜奇同一個境界08/24 11:35

7^F推yeahhuman:我也要講為什麼完全沒去翻塔台的資料...只有一個當事人08/24 11:39

9^F→yeahhuman:更扯的是是氣象專家在講解蟲洞的概念這哪招08/24 11:40

10^F推yeahhuman:10到45焦耳聽他發音翻譯沒錯為啥等於2兆兆顆氫彈08/24 11:43

11^F→yeahhuman:有時Discovery後面再接個賣磁場手環的廣告也沒違和感08/24 11:45

Re: [閒聊] 藍紫光雷射的一些有趣實驗

[ Physics ]3 留言, 推噓總分: +3

作者: alenbe - 發表於 2011/08/23 10:34(14年前)

1^F推yeahhuman:有趣08/23 11:34

[新聞] Higgs signal sinks from view

[ Physics ]28 留言, 推噓總分: +17

作者: psion - 發表於 2011/08/22 23:14(14年前)

7^F推yeahhuman:= =08/23 03:20

8^F→yeahhuman:有好有壞有人有更多工作做但LHC結果如果不好會影響下08/23 03:25

9^F→yeahhuman:一個對撞機的誕生搞不好LHC就是絕響了...08/23 03:26

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