Ball and feather in air/vacuum : Différence entre versions
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| Ligne 9 : | Ligne 9 : | ||
*Vacuum pump | *Vacuum pump | ||
*Clear flexible tubing | *Clear flexible tubing | ||
| − | + | *Power cable | |
| − | + | *Extension cord | |
| − | |||
==Instructions== | ==Instructions== | ||
Version du 23 juin 2014 à 17:54
PIRA index: 1C20.10
Description
A feather falls more slowly than a ball down a tube due to air resistance. When the tubes are evacuated, both the feather and ball fall with equal speed.
Equipment
- Double tube assembly
- Vacuum pump
- Clear flexible tubing
- Power cable
- Extension cord
Instructions
With both cylinders in air, rotate the tubes by 180 degrees...
Keywords
ball, drop, feather, vacuum
Images & Movies
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