光程差 = 双缝的间距d * 条纹到零级亮条纹的距离x / 光屏的距离z
第二条暗条纹:光程差 =1.5波长=d*x2 / z
第五条暗条纹:光程差 =4.5波长=d*x5 / z
x5-x2 = 3*波长 * z / d = 3*0.0006mm * 500mm / 0.3mm = 3mm
光程差 = 双缝的间距d * 条纹到零级亮条纹的距离x / 光屏的距离z
第二条暗条纹:光程差 =1.5波长=d*x2 / z
第五条暗条纹:光程差 =4.5波长=d*x5 / z
x5-x2 = 3*波长 * z / d = 3*0.0006mm * 500mm / 0.3mm = 3mm