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 |
|---|---|---|---|
| 3280 | 2018-07-27 14:45:13 | 60.90 | 98% |
| 1917 | 2017-07-29 14:20:16 | 50.09 | 97% |