일반물리학 2 — Diffraction: Problem 25

25 Figure 36-34 is a graph of intensity versus angular position \(\theta\) for the diffraction of an x-ray beam by a crystal. The horizontal scale is set by \(\theta_s = 4.00^\circ\). The beam consists of two wavelengths, and the spacing between the reflecting planes is 0.94 nm. What are the (a) shorter and (b) longer wavelengths in the beam?