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 |
|---|---|---|---|
| 2581 | 2019-12-04 20:48:13 | 78.89 | 99% |
| 2181 | 2019-08-14 20:56:08 | 84.41 | 98% |