Lead Balloon

Demo Number	105
Location	Shelf 18
Description	A balloon filled with keyboard duster (tetrafluoroethylene) is much heavier than one filled with air and as such, they fall at different rates.
Related Demos
Tips	Fill one balloon with the air from a keyboard duster (tetrafluoroethylene) and one balloon with room air. The air from the keyboard duster is much denser than regular air and when it is in a balloon this difference in density can be felt. You can also see a significant difference when the two balloons are dropped.

Colorado State University