i'd buy that for a dollar! (pentalon)

Race #106536

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Official speed 154.41 wpm (25.18 seconds elapsed during race)
Race Start May 20, 2019 5:09:12pm UTC
Race Finish May 20, 2019 5:09:37pm UTC
Outcome Win (1 of 2)
Accuracy 99.0%
Points 159.56
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.