PLANNING: - Title: - An Experiment to investigate the lateral displacement of a ray of light through a rectangular block of a transparent material. Aim: - To investigate the lateral displacement for different angles and how the displacement depends on the angle of incidence when a ray of light enters the Perspex block. Scientific Background: - Refraction occurs when the speed changes when the lights travels from one medium to another medium. If the light …showed first 75 words of 1932 total…

…showed last 75 words of 1932 total…and depths (D) to verify d "f D where i is constant, blocks of the same material but different D would be used. How is ƒÎ displacement d measured - use of a protractor and a sharp pencil. There were no anomalies in the graph. However, any anomalies that would have occurred would be due to inaccurate readings from measuring the lateral displacement with a ruler and the angle of refraction with a protractor.