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 |
|---|---|---|---|
| 438 | 2017-10-14 09:14:42 | 51.53 | 95% |
| 369 | 2017-04-14 07:22:05 | 53.57 | 94% |