Lance (derpex)

Race #142

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Official speed 122.22 wpm (31.81 seconds elapsed during race)
Race Start May 10, 2017 8:11:55pm UTC
Race Finish May 10, 2017 8:12:26pm UTC
Outcome Win (1 of 3)
Accuracy 99.0%
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.