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 |
|---|---|---|---|
| 2250 | 2017-04-06 19:27:36 | 61.10 | 96% |
| 1822 | 2017-02-22 18:48:57 | 57.22 | 97% |