Fi (rocafili)

Race #2902

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Official speed 43.39 wpm (89.61 seconds elapsed during race)
Race Start June 17, 2019 9:30:39am UTC
Race Finish June 17, 2019 9:32:09am UTC
Outcome No win (4 of 5)
Opponents 2. yasserhma (71.40 wpm)
3. tigerdriger (67.93 wpm)
Accuracy 97.0%
Points 44.84
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.