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 |
|---|---|---|---|
| 4462 | 2017-05-26 03:16:45 | 88.79 | 95% |
| 4383 | 2017-05-19 07:12:17 | 87.05 | 95% |