| 1 | Instead of flushing with water, you use a dry substance. | |
| 2 | Another reason, then, to switch to low-energy light bulbs. | |
| 3 | Now, what theories do we want to use to look at this? | |
| 4 | Instead of flushing with water, you use a dry substance. | |
| 5 | The usual way to work around is to use finger bellies, but that reduces precision. |