2. Trace the ray paths of each of the light rays, labeled 1-3, through the diamond until they exit into air again. The indices of refraction for diamond and air are provided. You will need to determine the critical angle of incidence for a light ray going from diamond into air. Neatly include your values for all angles of incidence, reflection, and refraction on the diagram. Use a protractor to carefully draw and measure all angles. diamond = 2.42 nair - 1.00 Sin in = Sicht. Sinis 1.0 2 Sin90 2.42