4. Compton scattering. a) Suppose we aim a monochromic source of X-rays with frequency vo at a crystal. The X-rays scatter off of electrons, essentially at rest, within the crystal. We then mea- sure the scattered X-ray's frequency and angle. Calculate the relationship between the scattering angle 0 and the outgoing frequncy v. b) Sketch your result for v(0) in part a. c) Is the measurement of v(0) in data a test of special relativity, quantum mechanics, both or neither?

4. Compton scattering. a) Suppose we aim a monochromic source of X-rays with frequency vo at a crystal. The X-rays scatter off of electrons, essentially at rest, within the crystal. We then mea- sure the scattered X-ray's frequency and angle. Calculate the relationship between the scattering angle 0 and the outgoing frequncy v. b) Sketch your result for v(0) in part a. c) Is the measurement of v(0) in data a test of special relativity, quantum mechanics, both or neither?