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[閒聊] 量子力學中的時間微擾章節

[ Physics ]15 留言, 推噓總分: +11

作者: deanwork - 發表於 2011/05/15 21:13(14年前)

8^F推answertw:因為Shanker有點偏introduction吧05/16 00:45

Re: [請益] 為什麼手靠在桌上不會掉下去?

[ Physics ]9 留言, 推噓總分: +7

作者: jessti - 發表於 2011/05/01 06:08(14年前)

6^F推answertw:以高中程度應該用正向力解釋就夠了吧＝＝05/01 23:18

[問題] 電子旋轉方向會固定嗎??

[ Physics ]12 留言, 推噓總分: +4

作者: phymg123 - 發表於 2011/03/25 00:09(14年前)

2^F推answertw:外加磁場若和電子旋轉方向不同，電子會繞該磁場進動03/25 01:04

3^F→answertw:進動後的電子向量可以用spin up&down疊加表示03/25 01:04

4^F→answertw:測量時只會測量到up or down ,因此每次測可能都會有不同03/25 01:04

5^F→answertw:結果，只能根據結果統計up&down的比例，進而推算電子真正03/25 01:05

6^F→answertw:的向量03/25 01:05

7^F→answertw:但若加磁場方向和電子自旋方向同軸，那電子自旋就不變03/25 01:05

9^F推answertw:??我有說機率阿~03/25 21:59

10^F→answertw:就是"每次測到的都有可能不同"03/25 21:59

[請益] 上面那串文章是否該停止?

[ Physics ]39 留言, 推噓總分: +13

作者: obluda - 發表於 2011/03/23 12:18(14年前)

34^F→answertw:無聊03/23 21:25

[問題] 無摩擦斜面的圓球滑下時會滾動嗎

[ Physics ]32 留言, 推噓總分: +10

作者: tcds - 發表於 2010/10/25 15:09(15年前)

17^F推answertw:起伏也不會滾吧,沒磨擦力,一起伏球就飛出去了？10/25 17:09

[問題] 問一個關於量子力學eigenstate的問題

[ Physics ]41 留言, 推噓總分: +7

作者: pennyleo - 發表於 2010/09/26 10:16(15年前)

1^F推answertw:應該是說...規定要Hermition算出的eigenvector09/26 10:22

2^F→answertw:才能是物理測量值09/26 10:22

3^F→answertw:因此如果非hermition算出來的,雖然可能是實數09/26 10:22

4^F→answertw:但應該是實際上測不出的數值吧??09/26 10:22

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