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TERM OF THE HOUR
rim ray
A ray of an image-forming bundle that passes through the edge of the entrance pupil or aperture stop. Usually used in connection with meridian rays, an upper rim ray is one that passes through the top of the pupil or stop, and a lower rim ray through the bottom.

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# terms:6095
# abbreviations:1948
last update:Snell's law of refraction
10/27/2014 11:37:46 AM
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