Evacuated glass tube has a coin and feather inside. Invert tube to see fall.
Smaller tube requires a vacuum pump.
Questions:
Why is the fall so different in air?
| DCS# 1C20.10 | NWU# M-29 |
| title: Coin and Feather aka: Free fall |
| Description: Evacuated glass tube has a coin and feather inside. Invert tube to see fall. Smaller tube requires a vacuum pump. Questions: Why is the fall so different in air? | |