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2 answers

The refractive index of its glass combined with the shapes of its surfaces (can have a mix of planar, convex, concave surfaces).

2007-11-19 14:38:34 · answer #1 · answered by Rich Z 7 · 0 0

refraction - its refractive characteristic.

2007-11-19 13:40:41 · answer #2 · answered by Kristofferson D 1 · 0 0

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