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 |
|---|---|---|---|
| 9331 | 2017-09-29 18:28:26 | 76.15 | 93% |
| 5532 | 2017-05-30 16:55:53 | 86.71 | 94% |