Ping (pinglam101)

Race #1630

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Official speed 90.29 wpm (43.06 seconds elapsed during race)
Race Start December 15, 2020 9:07:32am UTC
Race Finish December 15, 2020 9:08:15am UTC
Outcome No win (2 of 5)
Opponents 4. w199381 (74.42 wpm)
Accuracy 96.0%
Points 93.30
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.