How much dispersion is there when light goes during a slab of glass? For dense flint glass, n = 1.7708 for blue light (\gamma= 435.8 nm) and n = 1.7273 for red light (\gamma = 643.8 nm). White light in air (n = 1.0003) is incident at exactly 45°. Discover the angles of refraction for the two colors, and then find the dissimilarity in those angles in degrees. You must use five significant digits in all calculations.