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 |
|---|---|---|---|
| 12814 | 2017-06-20 13:59:25 | 62.02 | 98% |
| 11980 | 2017-03-21 14:56:12 | 56.80 | 91% |
| 11823 | 2017-03-09 14:52:53 | 58.29 | 94% |