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 |
|---|---|---|---|
| 13758 | 2017-03-28 15:15:58 | 80.42 | 92% |
| 12167 | 2017-02-27 10:10:23 | 73.27 | 93% |