So you have chosen DEATH (mathandphysicsftw)

Race #24845

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Official speed 134.78 wpm (28.85 seconds elapsed during race)
Race Start September 25, 2019 11:29:29am UTC
Race Finish September 25, 2019 11:29:58am UTC
Outcome Win (1 of 2)
Accuracy 99.0%
Points 139.27
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.