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 |
|---|---|---|---|
| 2386 | 2017-06-29 11:40:10 | 50.69 | 95% |
| 1806 | 2017-03-23 07:33:29 | 53.26 | 97% |