地球周围大气层总质量的估算

Estimation of Atmosphere's Quality

物理估算题不失为是培养和考查学生运用物理知识(包括物理概念、定理和定律等)分析和解决实际问题的有效方法。但是必须指出,为保证方法的有效,"估算"时每一步应有严格的科学依据。本文在指出关于大气层总质量估算过程中存在某些科学性错误的基础上,建立一个理想化的大气分子模型,并利用波尔兹曼分布律,用比较合理和科学的方法,估算了大气层总质量。

Estimation exercises practice is rather an effective way to train and check the students' abilities of utilizing the physical knowledge including the conceptions,theorems and so on to analyze and solve the practical problems.But we should have strict science basis for each step of estimating to be sure of the effectiveness of the practice.This paper first points out some scientific mistakes about the estimation of the atmosphere's quality,and build up an ideal model of atmospheric molecule.According to Bolzman law,the paper finally estimates the total quality of the atmosphere by using rather reasonable and scientific method.