The Wave Nature of light: Interference Chapter 30 The law of refraction B Where 0=i 0,=r E V2△t v△t sin e AC VI △tv1 sin,v2△ △t AC
The Wave Nature of Light; Interference Chapter 30 B C i A D E F v1 v2 v2△t Where 1=i, 2=r 1 2 2 1 2 1 2 1 2 1 sin sin n n v v v t v t AC v AC v t = = = = The law of refraction:
The Wave Nature of light: Interference Chapter 30 O Wavelength and index of refraction(折射率) (For all electromagnetic wave) λ and c are wavelengt gth and speed of a certain monochromatic light(单色光) Invacuulm ψand久=/ n are in medium with an index of refraction n v=c/n.=//n
The Wave Nature of Light; Interference Chapter 30 Wavelength and index of refraction（折射率) f n f n c v n = = = and c are wavelength and speed of a certain monochromatic light （单色光）in vacuum. v and n = /n are in medium with an index of refraction n. v=c/n , n= /n (For all electromagnetic wave)
The Wave Nature of Light; Interference Chapter 30 30-3, 30-4, 30-5Interference-Young's Double-slit Experiment p683-690 杨氏在1801年 首先用实验的 方法研究了光 的干涉现象, 为光的波动理 论确定了实验 基础 托马斯·杨( Thomas toung, 1773-1829)
The Wave Nature of Light; Interference Chapter 30 30-3, 30-4,30-5 Interference-Young’s Double-Slit Experiment p683-690 杨氏在1801年 首先用实验的 方法研究了光 的干涉现象， 为光的波动理 论确定了实验 基础
The Wave Nature of light: Interference Chapter 30 1 Coherence相干光P687 相干条件: (1)频率相同,(2)相位差恒定,(3)光矢量振动方向平行 In fig. Because the waves passing through slits 1 and 2 are portions of the single light wave that illuminates the slits The phase difference remains constant. the 2 light from slits S and s, is said to be completely coherent
The Wave Nature of Light; Interference Chapter 30 r1 r2 S1 S2 In fig. Because the waves passing through slits S1 and S2 are portions of the single light wave that illuminates the slits. The phase difference remains constant, the light from slits S1 and S2 is said to be completely coherent. 相干条件: (1)频率相同, (2)相位差恒定,(3)光矢量振动方向平行 1 Coherence 相干光 P687
The Wave Nature of light: Interference Chapter 30 2)相干光的产生 波阵面分割法 振幅分割法 光源兴
The Wave Nature of Light; Interference Chapter 30 2）相干光的产生 波阵面分割法 光源* 1 s 2 s 振幅分割法