Discover how to use ray tracing to measure angles of incidence and refraction in a practical experiment, then plot the results on a graph.

There are different ways to investigate refraction in rectangular blocks. In this required practical activity, it is important to: make, measure and record the angles of incidence accurately using ...

In this case angle of refraction is smaller than angel of incidence. When light rays travel from air into glass or from air into water, it bends towards normal.