Paraxial Approximation and the Mirror
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This Demonstration shows the focusing behavior of paraxial (blue) and nonparaxial (red) rays reflecting from a spherical or paraboloidal mirror.
Contributed by: David Schurig (March 2011)
Open content licensed under CC BY-NC-SA
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"Paraxial Approximation and the Mirror"
http://demonstrations.wolfram.com/ParaxialApproximationAndTheMirror/
Wolfram Demonstrations Project
Published: March 7 2011