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 |
|---|---|---|---|
| 1648 | 2017-10-17 09:32:17 | 51.00 | 96% |
| 1564 | 2017-10-12 02:07:10 | 48.18 | 96% |