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 |
|---|---|---|---|
| 1152 | 2017-03-10 14:02:24 | 54.43 | 93% |
| 571 | 2017-01-22 23:01:50 | 49.71 | 92% |