Interference of light waves
Interference of light waves
Agenda Today 1.Two-slit experiment 2.Film interference 3.Newton's rings
Agenda Today 1. Two-slit experiment 2. Film interference 3. Newton’s rings
Conditions for interference 1 the source should be monochromatic(单色) same frequency 2 the sources must maintain a constant phase difference. Why is there no interference pattern caused by two bulbs?
Conditions for interference 1 the source should be monochromatic(单色) same frequency 2 the sources must maintain a constant phase difference. Why is there no interference pattern caused by two bulbs?
Young's double-slit experiment(杨氏双缝实验 杨氏双缝于涉波面图 回 Thomas Young (1773-1829) 波长 7400 缝宽■ 40
Young’s double-slit experiment（杨氏双缝实验）
In the case the double slits δ=h-K≈dsin8 D>a is very small s08=g9-d月 疗=k=02) Constructive bright fringes 号=-&-123) Destructive dark fringes
In the case the double slits： r1 r2 x P S s1 s2 D d o P S s1 s2 D d o Constructive bright fringes Destructive dark fringes