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 |
|---|---|---|---|
| 1543 | 2018-10-19 11:03:05 | 92.70 | 98% |
| 561 | 2017-10-21 16:55:46 | 93.51 | 99% |