【正文】
72242()2()1()2()1(??????????????????????????????????ra dhhhhhjhjhjjjjjjjjjjjj???????????????????號(hào))這里應(yīng)?。杭矗海。匀ジ叽雾?xiàng),有:??!展開(kāi)為:很小,將由對(duì)第一暗環(huán)而言,立有處,即中心亮斑對(duì)應(yīng)于① .2242)211(1)1(1c o s141211]1[si n1c o ssi n.4c o s1,2)c o s1(2:)21(c o s2222221242212)2()1()2()1(????????????????????????????????????????hhhhhjhjhjjjjjjjjjjjjjjjjj????????????????????????即:略去高次項(xiàng),有:很小,依題意(同上)有:② hiihihihjjjj22242si n222)c o s1(222????????????????15. 用單色光觀察牛頓環(huán),測(cè)得某一亮環(huán)的直徑為 3mm,在它外邊第 5個(gè)亮環(huán)的直徑為 ,所用平凸透鏡的凸面曲率半徑為 ,求此單色光的