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 |
|---|---|---|---|
| 6690 | 2020-08-05 11:36:23 | 92.40 | 97% |
| 5717 | 2019-08-21 07:14:58 | 86.01 | 97% |