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 |
|---|---|---|---|
| 623 | 2017-03-24 02:37:01 | 61.43 | 93% |
| 502 | 2017-02-26 02:10:39 | 58.31 | 91% |