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 |
|---|---|---|---|
| 7478 | 2018-08-01 07:31:06 | 62.20 | 99% |
| 3895 | 2017-04-18 10:44:15 | 56.83 | 96% |