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 |
|---|---|---|---|
| 3397 | 2017-06-06 11:24:11 | 80.23 | 96% |
| 1018 | 2017-02-22 03:10:55 | 79.39 | 91% |