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 |
|---|---|---|---|
| 3791 | 2017-10-05 04:32:11 | 55.11 | 96% |
| 2788 | 2017-04-07 21:55:04 | 49.31 | 93% |