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 |
|---|---|---|---|
| 1478 | 2017-04-06 02:49:32 | 75.51 | 97% |
| 1110 | 2017-03-15 03:29:59 | 73.80 | 98% |