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 |
|---|---|---|---|
| 2924 | 2020-12-13 11:38:09 | 110.08 | 98% |
| 2716 | 2020-12-12 21:36:20 | 55.26 | 94% |