BCIT Physics Department
- To illustrate atmospheric pressure.
When the air space between the two discs has been exhausted, the stopcock closed, and the device removed from the pump plate, it will be impossible to pull the plates apart by hand. If the stopcock is opened, they separate easily.
Watch a Pressure Demo: Magdeburg Hemispheres
video demonstration on Youtube
- Video Created at Utah State University by Professor Boyd F. Edwards and assistants.