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 |
|---|---|---|---|
| 1234 | 2017-06-12 08:33:38 | 75.55 | 98% |
| 1154 | 2017-06-08 07:24:54 | 71.10 | 96% |