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 |
|---|---|---|---|
| 2720 | 2018-12-05 16:42:08 | 71.58 | 97% |
| 1881 | 2017-01-21 13:06:14 | 63.69 | 93% |