The Astronomers' Magic Envelope —— An Introduction to Astrophysics Emphasizing General Principles and Orders of Magnitude

----- 天文学家的魔法信封：天体物理学中强调总体原则和大小顺序的介绍

ISBN: 9780198816461 出版年：2018 页码：132 Saha, Prasenjit Taylor, Paul A Oxford University Press

Working physicists, especially astrophysicists, value `back-of-the-envelope' calculations — short elegant computations or arguments that start from general principles and lead to interesting results. This book guides advanced undergraduates and lower graduates on how to understand astrophysics using general principles and concise calculations.