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 |
|---|---|---|---|
| 1134 | 2017-03-12 21:23:21 | 72.60 | 96% |
| 738 | 2017-02-01 17:54:23 | 72.95 | 97% |