Purpose:Demonstrates internal reflection and dispersion of light
Description:A single light ray is focused by a convex lens to limit its width. The ray enters a plastic disc, which models the water drop, is reflected internally and returns at an angle of about 40 degrees. The dispersion is apparent at a distance from the drop, so the light can be cast on a wall or a distant screen to see the colors.
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Last modified on Thursday, 16 January 2014 14:13