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 |
|---|---|---|---|
| 514 | 2017-05-03 05:24:46 | 85.94 | 99% |
| 178 | 2017-04-03 09:03:14 | 77.99 | 95% |
| 6 | 2017-03-24 15:22:56 | 72.52 | 94% |