A (viking_)

Race #734

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Official speed 46.65 wpm (83.34 seconds elapsed during race)
Race Start June 21, 2017 6:40:50pm UTC
Race Finish June 21, 2017 6:42:13pm UTC
Outcome No win (4 of 5)
Opponents 1. avi3777 (55.77 wpm)
Accuracy 96.0%
Points 0.00
Text #3622413 (Length: 324 characters)

The observed brightness of a Lambertian surface may be written as the product of an albedo factor, p, and the cosine of the incident angle, cos i. This means that brightness can be written as a product of a term that depends on the material, p, and a term that depends on surface direction, which in turn depends on f and g.