The Lazy Universe —— An Introduction to the Principle of Least Action

----- 懒惰的宇宙: 最小作用量原理简介

ISBN: 9780198743040 出版年：2017 页码：280 Coopersmith, Jennifer Oxford University Press

The Principle of Least Action underlies all physics and leads into quantum mechanics and Einstein's Relativity. There are some textbooks that do the calculations, and one book with nice pictures, but no book (before this one) that explains what 'action' is, and why nature follows this principle.