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 |
|---|---|---|---|
| 2253 | 2017-08-13 10:46:27 | 87.92 | 97% |
| 255 | 2017-05-10 12:38:29 | 72.85 | 88% |