Chapter 15 Mechanical Wave 第15章机械波
第15章 机械波 Chapter 15 Mechanical Wave
815-1 Formation Propagation of a Mechanical Wave机械波的产生和传播 815-2 Wave Speed Elasticity of the Medium 。机械波的传播速度媒质的弹性(自学) §153 Wave Function of a Plane shiw之 平面简谐波波动方程 8 15-4 Energy Energy Flow and Wave Intensity 波的能量波动强度
§15-1 Formation & Propagation of a Mechanical Wave 机械波的产生和传播 §15-3 Wave Function of a Plane SHW 平面简谐波 波动方程 §15-4 Energy Energy Flow and Wave Intensity 波的能量 波动强度 §15-2 Wave Speed & Elasticity of the Medium 机械波的传播速度 媒质的弹性（自学）
§155Ht uygen's Inciple ODae 惠更斯原理 75008 15-6 Principle of Superposition of Waves o n0 Interference of Waves 波的叠加原理波的干射 §15-7 Standing waves 驻波 s15-8 The Doppler effect多普勒效应
§15-8 The Doppler Effect 多普勒效应 §15-6 Principle of Superposition of Waves Interference of Waves 波的叠加原理 波的干射 §15-5 Huygen’s Principle 惠更斯原理 §15-7 Standing Waves 驻波
教学要求 1、确切理解描述波动的物理量的物理意义,并能熟练 地确定这些物理量; 2、深刻理解平面简诸波波动方程的物理意义,并会建 立波动方程,运用它来讨论与分析波动现象; 3、理解波的能量能流密度 4、熟练掌握波的干涉原理和干涉强弱的条件; 5、理解驻波形成条件和干涉强弱条件; 6、理解多勒效应
教学要求 1、确切理解描述波动的物理量的物理意义，并能熟练 地确定这些物理量； 2、深刻理解平面简谐波波动方程的物理意义，并会建 立波动方程，运用它来讨论与分析波动现象； 3、理解波的能量 能流密度 4、熟练掌握波的干涉原理和干涉强弱的条件； 5、理解驻波形成条件和干涉强弱条件； 6、理解多勒效应
Introduction 9 message what method? 斗南村 New York letter)( telephone fax Small paper In general, your information can be transmitted by the waves that we will study in this chapter
Introduction message what method? letter telephone fax …….. Small paper In general, your information can be transmitted by the wavesthat we will study in this chapter. New York 斗南村
Small bush: 萨达姆 y First step: war of information!!! Second step Old Bush: war Q E ICe Day Q
Small bush: 萨达姆 Old Bush: war First step: war of information!!! Second step: Q Q
The types of waves (1)Mechanical waves: earthquake waves, sound wave, water wave,… )
The types of waves (1)Mechanical waves: earthquake waves, sound wave, water wave,
(2)Electromagnetic waves: light, sun, communication
(2)Electromagnetic waves: light, sun, communication
(3) Gravity waves: (4) Matter waves: electron, atom, molecule annin g probe Electron tunneling current Vacuum ii Surface of specimen
(3) Gravity waves: (4) Matter waves: electron, atom, molecule……
(5)ogle(ki): a look of great interest, practising by yourself
(5)Ogle(秋波): a look of great interest, practising by yourself