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In this experiment I have been asked to investigate the relationship between the thickness of a glass block through which a beam of light will be passed and the resultant amount of lateral displacement of the beam.
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Stuart McKenzie Introduction In this experiment I have been asked to investigate the relationship between the thickness of a glass block through which a beam of light will be passed and the resultant amount of lateral displacement of the beam. Background knowledge We know that light travels in straight lines however there are substances which will refract (bend) light. Refraction is the change in direction in which waves travel when they pass from one kind of matter to another. Waves are refracted when they pass from one medium to another in which the velocity of light is different. A pencil standing in water appears broken at the water line because light travels slower in water than air. When the light passes into a more dense medium it bends towards the normal when it travels into a less dense medium it bends away from the normal. The denser a substance the more light will bend...
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