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作者 KBmax 在 PTT 全部看板的留言(推文), 共1475則
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1F推: 呃...有啊@@?10/23 02:50
3F推: 不就top down跟bottom up?10/19 02:36
1F推: alpha decay happens when the nuclear force, which is th09/26 01:10
2F→: e complication of the strong interaction, cannot compen09/26 01:10
3F→: sate the electrostatic repulsion between protons. There09/26 01:10
4F→: fore it’s a phenomenon at nuclear level, while the bet09/26 01:10
5F→: a decay, which is governed by weak interaction, is sort09/26 01:10
6F→: of process at fundamental particle level.09/26 01:10
7F推: roughly speaking, beta decay happens “inside” the nuc09/26 01:20
8F→: leons, where strength of weak interaction is still cons09/26 01:20
9F→: iderable, but alpha decay happens outside nucleons and09/26 01:20
10F→: inside a nuclei, where weak interaction is negligible.09/26 01:20
11F→: So we can rule out the weak interaction in alpha decay09/26 01:20
12F→: process.09/26 01:20
13F→: reminder: the range of weak interaction is about 1/Mw~09/26 01:21
14F→: 0.0025 fm, while the nuclear force range is about 1 fm09/26 01:21
15F→: which is the size of a nuclei.09/26 01:21
1F推: 不好意思 想請問一下 取消的話 ETS那邊會自動退費09/05 14:44
2F→: 嗎?09/05 14:44
3F→: 還是說需要自己再去申請退費呢?因為我是在他取消09/05 14:45
4F→: 之前報名的09/05 14:45
1F推: 八成聽不懂研究學者在講什麼,直接唬爛吧......05/23 11:23
18F推: 反正數學定理只有在具有物理意義的情況下 才會被重視吧,02/18 19:10
19F→: 事實上不少情況 數學定理本身和適用條件等都有機會對應到一02/18 19:10
20F→: 個物理圖像(只是想不想得到罷了02/18 19:10
20F推: 同意樓上而且這裡應該是沒有要討論Open quantum system 啦X11/01 22:17
21F→: D11/01 22:17
3F→: 是一樣的東西,自由能最小化,就是在講熱力學第二定律與第10/17 22:20
4F→: 一定律結合的推廣。有需要可以重讀一下平衡態熱力學10/17 22:20
5F→: 自發反應就是趨向平衡的過程,Spontaneous process 代表irr10/17 22:22
6F→: eversibly toward the equilibrium state喔樓上,在孤立過10/17 22:22
7F→: 程系統的能量不變,所以entropy 增加的方向就是自發方向,10/17 22:22
8F→: 不正是熱力學第二定律的描述嗎?10/17 22:22
5F推: 樓上我還以為你說糖phone XDDD09/10 20:03
4F推: 我們可以從氣態的H+ OH-和H2O的簡單模型用粗略的氣體動力09/01 17:22
5F→: 論來看,確實正反應與逆反應達到detailed balance後濃度成09/01 17:22
6F→: 為定值(因為反應速率跟反應物的濃度直接相關)09/01 17:22