桃花源主, A naive question about 四大力学

来源: 于 2018-11-08 06:39:26 [旧帖] [给我悄悄话] 本文已被阅读：次

In physics, what do you mean by 四大力学. I know Newtonian dynamics and Li Lun Li Xue pretty well in college. Are these the first two? If yes, quantum mechanics should be No. 3. What is the number 4?