Bill (physicsgod)

Race #512

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Official speed 115.25 wpm (33.74 seconds elapsed during race)
Race Start March 29, 2018 12:13:27am UTC
Race Finish March 29, 2018 12:14:01am UTC
Outcome Win (1 of 2)
Accuracy 97.0%
Points 119.09
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.