《大学化学》是一门鸡肋的水课，学了将近两个月的配位化学，只是觉得崩溃，对于有机物的介绍也停留在给老年人科普的科学水平，需要记忆的枯燥知识点远比带来的知识体系提升更多。
For me, the computer rookie, in order to take advantage of different packages in python, I mis-operated my computer and broke it, and finally had to reinstalled the operating system. Here I recorded the procedures of configuring coding tool from a system-reinstalled computer as a manual. I currently use Windows 10, the process applies to Windows although I may soon switch to Mac.
This post covers several topics from PHY2707 and PHY2709 of UofT grad course. I will update whenever I need to teach or review the related materials. I also included something I learned as an undergrad but I believe they’re too difficult for undergrads…
Ludwig Boltzmann, who spent much of his life studying Statistical Mechanics, died in 1906, by his own hand. Paul Ehrenfest, carrying on the work, died similarly in 1933. Now it is our turn to study Statistical Mechanics. Perhaps it will be wise to approach the subject cautiously. –in States of Matter, by David. L. Goodstein, 1975, Dover N.Y.
任课老师是好老师，但不妨碍课是门烂课，学了不如不学，不如自学。所以我们接着自学 Griffiths（引用体内为 Griffiths）。
I think I can safely say that nobody understands quantum mechanics.–Richard Feynman
分析力学给出了力学系统在完全一般性的广义坐标下具有不变性是的动力学方程组，并突出了能量函数的意义。分析力学甚至概括了比牛顿力学广泛得多的系统，例如在电气系统、控制系统中的应用就是一个明显的例子。分析力学的数学形式有着极好的性质，它不仅提供了解决天体力学及一系列动力学问题的较佳途径，同时给量子力学的发展提供了启示，最适宜于成为引向现代物理的跳板。其最小作用量原理提供了建立相对论量子力学最简练而富有概括性的出发点。——梁昆淼
La gloris di colui che tutto move per l’universo penetra, e risplende in una parte più e meno altrove. – Paradiso: Canto I, Dante Alighieri
现在可以研究传播着的电磁波了。
The author wrote an physics article that pointed out a mathematical flaw of “Answers to 1000 Electromagnetic Problems (电磁学千题解) 2.1.45”, the most authorized problem set on electromagnetism in China. The article won the first prize (~7%) of the 24th Basic Subject Forum (第24届基础学科论坛) on Sept 3, 2021. Here is the link of the announcement. This is such a accomplishment that I have to pin it in English on my website!
Config files for my GitHub profile.