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 |
|---|---|---|---|
| 896 | 2017-04-10 06:06:10 | 129.81 | 95% |
| 880 | 2017-04-10 00:44:00 | 117.92 | 91% |