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 |
|---|---|---|---|
| 635 | 2017-04-21 18:30:29 | 59.85 | 97% |
| 612 | 2017-04-21 10:36:46 | 52.44 | 93% |
| 207 | 2017-04-17 11:23:45 | 35.98 | 90% |