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20 Cards in this Set
- Front
- Back
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Refraction |
The bending of light |
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Apex |
The thinnest point at which the two nonparallel surfaces of a prism meet |
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Base |
The widest portion of a prism, opposite of the Apex |
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Corpuscular theory |
Light traveling in minute burst of energy particles called photons |
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Prism |
Triangular shaped piece of glass or plastic which deviates light towards the base |
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Biconvex |
An outward curved surface on both front and back sides |
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Chromatic aberration |
When white light is broken into its spectral component colors |
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Astigmatism |
When light has more than one focal point in must be corrected by a lens having two different powers |
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Focal length |
The distance rays of light conversion after passing through an optical lens |
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Wave theory |
Light traveling in waves |
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Wave length |
The distance from the crest of one wave to the crest of the next |
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Emergent Ray |
Light that exits The lens |
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Optical center |
The point on an ophthalmic prescription lens through which no prismatic effect is manifested |
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Incident ray |
Light that enters the lens |
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Normal |
An imaginary line which represents optical center on a lens |
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Reflection |
The bouncing off of light by a lens surface |
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Refractive index |
The ratio of the speed of light in air compared to the speed of light in a medium |
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Chromatic aberration |
When light is broken into its spectral component colors |
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Spherocylinder |
The combination of sphere and cylinder powers into a single lens |
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Toric |
A surface having two separate curves at right angles to one another |
