论文部分内容阅读
一、一个基本理论一个理论是指分子动理论,它是从物质微观结构的角度来研究热现象的理论.其基本内容包括以下三点:(1)物体是由大量分子组成的,因为分子很小(分子质量的数量级为10~(-26)Kg、分子直径的数量级为10~(-10)m),所以为了表达这里的“大量”,教材引入了阿伏加德罗常数.(2)物体里的分子永不停息地做无规则运动,这种运动跟温度有关,常称做热运动.扩散现象和布朗运动都可以很好地证明分子的热运
First, a basic theory A theory refers to the theory of molecular dynamics. It is the theory of studying thermal phenomena from the perspective of the microstructure of matter. Its basic content includes the following three points: (1) The object is composed of a large number of molecules because the molecules are very Small (the molecular mass is on the order of 10~(-26)Kg, and the molecular diameter is on the order of 10~(-10)m), so in order to express the “mass” here, the textbook introduces Avogadro’s constant. (2 ) The molecules in an object never stop doing irregular movements. This movement is related to temperature and is often called heat movement. Both diffusion phenomenon and Brownian motion can well prove the molecular heat transfer.