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The speed of light through Perspex
Member rating: No Rating | Words: | Submitted: Thu Feb 03 2005
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The speed of light through Perspex Planning Light travels at different speeds through different mediums. The speed of light in air is 300,000,000m/s. When light enters an optically denser medium, it bends towards the normal (refracts). You can work out the refractive index of by dividing the sine of the incidence angle by the sine of the angle of refraction and then working out the ratio of the two. Sine i Sine r From this refractive index you can work out the speed of light through the chosen medium by dividing the speed of light through air by the refractive index. 300,000,000 Refractive index Experiment: Apparatus list: Ray box Power pack Perspex D-Block Pencil Paper with degree markings. ...
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