gc textbook chapter 24 Wave Nature of Light (id: e81997ae9)

本题目来源于试卷: gc textbook chapter 24 Wave Nature of Light，类别为 通用国际物理

[填空题]
The first-order line of 589-nm lightpp*llg-x7rgewe e(.2 fallinq9i* gb: k;q* p1lzjzwg on a diffraction grating is observed a9zl :ibjqqk*wg zp;1 *t a 15.5$^{\circ}\,$ angle. How far apart are the slits?    $\mu m$
At what angle will the third order be observed?

参考答案: 2.2±2%


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