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 |
|---|---|---|---|
| 12054 | 2018-02-19 07:54:47 | 68.86 | 96% |
| 9543 | 2017-03-27 05:01:34 | 74.69 | 93% |