Final answer:
Snell's Law describes the relationship between the angles of incident and transmission beams and the speed of media. It shows how a light ray changes direction due to variations in the speed of light across different materials.
Step-by-step explanation:
The name that describes how the angles of the incident and transmission beams are related to the speed of the two media is known as Snell's Law. Snell's Law provides the mathematical relationship between the angles of incidence and refraction when a wavefront passes from one medium into another with differing speeds of light. The law is represented by the equation n1 sin θ1 = n2 sin θ2, where n1 and n2 are the indices of refraction of the first and second media, and θ1 and θ2 are the angles of the incident and refracted rays with respect to the normal.