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Photo Details
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Poster: dsws
(see this users gallery)
Intensity is proportional to angular area of the source. Tangent A1 is L1/D. Tangent A2 is L2/D. Width is infinitesimal so angular width is still infinitesimal, proportional to 1/D. Intensity is arctan(L1/D)/D + arctan(L2/D)D. |
· Date: Mon December 10, 2012 · Views: 1318 · Filesize: 2.9kb · Dimensions: 431 x 344 ·
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Additional Info
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Keywords: light intensity
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