sean (puzzle1116)

Race #242

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Official speed 65.08 wpm (59.74 seconds elapsed during race)
Race Start December 6, 2019 6:54:11am UTC
Race Finish December 6, 2019 6:55:10am UTC
Outcome No win (3 of 5)
Opponents 1. buantum (83.65 wpm)
Accuracy 97.0%
Points 67.25
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.