《必修》第二册(P227)指出:“由插页图6可以看出,在双缝干涉现象里,明条纹或暗条纹之间的距离,总是相等的。”引出上述结论后,课堂上让同学们测量相邻明(或暗)条纹间的距离。要向学生指明,测量应从条纹中央量起,到相邻的条纹中央为止。通过测量,能得出红光的明(暗)条纹间的距离都是5.6毫米,蓝光的是3.7毫米,这样很自然的纠正了 “Compulsory” Volume II (P227) states: “It can be seen from Figure 6 that in the double-slit interference phenomenon, the distance between bright strips or dark strips is always the same.” Let students measure the distance between adjacent bright (or dark) stripes. To indicate to the student, the measurement should be measured from the center of the stripe to the center of the adjacent stripe. Through measurements, it can be seen that the distance between the bright (dark) fringes of the red light is 5.6 mm and the blue light is 3.7 mm, which is naturally corrected