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 |
|---|---|---|---|
| 1313 | 2017-01-25 02:44:22 | 70.05 | 94% |
| 980 | 2017-01-18 19:01:38 | 70.18 | 96% |