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 |
|---|---|---|---|
| 1882 | 2019-04-30 10:02:29 | 53.10 | 94% |
| 134 | 2019-03-20 00:52:56 | 47.48 | 95% |