摘要
当代大学生对相对论理论感兴趣,希望在广义相对论方面能进行深入的研究。然而狭义相对论原理是广义相对论理论的基础,同学们得先掌握狭义相对论理论。教学实践中发现,初学者常常不能很好地理解狭义相对论时空观。本文以两道典型的习题为例,分别基于K系和K′系来处理问题,分析事件发生的时空坐标,求解狭义相对论的时空问题。方法相互印证,使学生更容易掌握解决狭义相对论时空问题的方法。本文还提出了用相对论速度求解时空问题时容易忽视的问题,分析了错误产生的原因,并给出了正确的求解方法。
Contemporary college students are interested in relativistic theory,and hope to do some research on general relativity.However,the principle of special relativity is the basis of general relativity,and students should master the theory of special relativity firstly.Unfortunately,in the practice of teaching,it is found that the beginners are harder to understand the space-time view of special relativity.In this paper,two typical exercises are taken as an example,which are solved on the K system and the K＇system,to analyze the space-time coordinates of the events and solve the space-time problems of the special relativity.The two methods confirm each other,which makes it easier for students to master the method of solving space time problems in special relativity.In addition,this paper also puts forward the problem which is easy to be neglected when solving the space-time problem by using relativistic velocity,analyzes the cause of the error,and gives the correct solution.
作者
何春山
HE Chunshan(School of Physics,Sun Yat-sen University,Guangzhou Guangdong 510275)
出处
《物理与工程》
2018年第5期55-58,共4页
Physics and Engineering
关键词
狭义相对论
时空观
相对论速度
special relativity
space-time view
relativistic velocity
