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 |
|---|---|---|---|
| 8131 | 2018-10-06 19:39:28 | 87.38 | 96% |
| 6229 | 2018-04-29 13:13:53 | 94.03 | 98% |
| 4392 | 2018-02-07 17:11:51 | 85.36 | 96% |