Chapter 16 Kinetic Theory of Gases 理想气体的微观模型 1)分子可视为质点;线度d~10-m, 间距r~10m,d<r 2)除碰撞瞬间,分子间无相互作用力; 3)弹性质点(碰撞均为完全弹性碰撞); 4)分子的运动遵从经典力学的规律
Chapter 16 Kinetic Theory of Gases 1）分子可视为质点； 线度 间距 ; ~10 m, −10 d r d r − ~10 m, 9 2）除碰撞瞬间, 分子间无相互作用力； 理想气体的微观模型 4）分子的运动遵从经典力学的规律 . 3）弹性质点（碰撞均为完全弹性碰撞）；
Chapter 16 Kinetic Theory of Gases Chapter 16 Kinetic Theory of Gases (气体动理论) 1. Molecular interpretation of Temperature 2. Distribution of Molecular Speed 3. Mean Free Path
Chapter 16 Kinetic Theory of Gases Chapter 16 Kinetic Theory of Gases （气体动理论） 1. Molecular interpretation of Temperature 2. Distribution of Molecular Speed 3. Mean Free Path
Chapter 16 Kinetic Theory of Gases Root mean square:方均根速率 Maxwell distribution of speeds 麦克斯韦速率分布率 Mean free path平均自由程
Chapter 16 Kinetic Theory of Gases Root mean square: 方均根速率 Maxwell distribution of speeds 麦克斯韦速率分布率 Mean free path 平均自由程
Chapter 16 Kinetic Theory of Gases 8 16-1 Molecular Interpretation of Temperature (384-388) This section is typical method of m IcroscopIc research which is called kinetic theory of gases. Kinetic theory is based on an atomic model of matter. The basic assumption of kinetic theory is that the measurable properties of gases combined actions of countless numbers of atoms and molecules
Chapter 16 Kinetic Theory of Gases §16-1 Molecular Interpretation of Temperature (384-388) This section is typical method of microscopic research which is called kinetic theory of gases. Kinetic theory is based on an atomic model of matter. The basic assumption of kinetic theory is that the measurable properties of gases combined actions of countless numbers of atoms and molecules
Chapter 16 Kinetic Theory of Gases 1 Velocities based on statistics Statistical Hypotheses(统计假设 (a) Velocities of molecules are different. Each molecule has its velocity, which may be changed due to collisions (b) At equilibrium, the distribution of molecules on the position is uniform, which means that the density of number of molecules is the same everywhere
Chapter 16 Kinetic Theory of Gases 1 Velocities based on statistics: Statistical Hypotheses(统计假设): (a) Velocities of molecules are different. Each molecule has its velocity, which may be changed due to collisions; (b) At equilibrium, the distribution of molecules on the position is uniform, which means that the density of number of molecules is the same everywhere