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对这部分内容,应该把它上好,或者当作科普宣传的方式介绍给学生.一、课题引入我们认识原子具有内部结构是从发现电子开始的,那么认识原子核具有内部结构是从何时开始的呢?——是从发现放射性现象开始的.那么,什么是放射性现象?它有什么作用?对人类有何妨害?本节就将探讨这些问题.接下来介绍19世纪末,法国科学家贝克勒尔发现铀矿石能发出一种射线的过程,开始认识放射性现象,后来,波兰物理学家居里夫人从事放射性现象的研究,发现了钋和镭两种放射性物质,她在放射性现象的研究、应用方面先后两次获得了诺贝尔奖.
For this part of the content, it should be better or as a means of propaganda to science students. First, the topic is introduced. We know that the internal structure of an atom begins with the discovery of electrons. Then when did you know when an atomic nucleus has an internal structure? What? — What is radioactivity? What does it do? What harms humans? This section will discuss these issues. Next, at the end of the 19th century, French scientist Becquerel Found that uranium ore can emit a ray process, began to understand the radioactive phenomenon, and later, Polish physics home lady engaged in the study of radioactive phenomena, found two kinds of radioactive materials, thorium and radium, she has in the research and application of radioactive phenomena Won the Nobel Prize twice.