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 |
|---|---|---|---|
| 751 | 2018-08-01 12:53:12 | 60.57 | 97% |
| 545 | 2018-01-18 10:59:52 | 74.20 | 99% |