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 |
|---|---|---|---|
| 699 | 2019-09-14 21:03:10 | 109.90 | 96% |
| 66 | 2018-06-21 15:53:56 | 86.90 | 95% |