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.
| Game | Time | WPM | Accuracy |
|---|---|---|---|
| 1069 | 2017-09-12 18:24:07 | 50.65 | 94% |
| 349 | 2017-08-09 00:00:45 | 54.25 | 95% |