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 |
|---|---|---|---|
| 548 | 2017-11-24 08:19:25 | 65.98 | 95% |
| 54 | 2017-03-22 13:10:08 | 58.91 | 92% |