When x-rays with wavelength 0.4 × 10−10 m hit a crystal at an angle of 30° to the surface, a strong beam of x-rays is observed in the direction of the “reflection” angle. Assume that you know from...

When x-rays with wavelength 0.4 × 10−10 m hit a crystal at an angle of 30° to the surface, a strong beam of x-rays is

observed in the direction of the “reflection” angle. Assume that you know from other evidence that the spacing of the

atomic layers parallel to this surface of the crystal is greater than 1 × 10−10 m and less than 1.8 × 10−10 m. What are

possible values of the spacing between the layers?