A. Homework 6. Questions
B. Brightness & Size vs. Distance
| dist 1 | dist 2 | CBL/FDS* | dist ratio | size ratio | brightness ratio |
| 2 | 4 | FDS | 2 | 1/2 | 1/4 |
| 3 | 1 | CBL | 1/3 | 3 | 9 |
| 16 | ____ | CBL | ____ | ____ | 16 |
| 16 | ____ | CBL | ____ | 16 | ____ |
| 2 | ____ | FDS | ____ | ____ | 1/25 |
| 2 | ____ | FDS | ____ | 1/25 | ____ |
| 2 | 5 | ____ | 5/2=2.5 | 2/5=1/(2.5) | 4/25=1/(6.25) |
| 3 | 2 | ____ | ____ | ____ | ____ |