fluid_mechanics.gif (14060 bytes)

AIR PRESSURE
(CRUSHING A CAN)





EQUIPMENT
    redball.gif (326 bytes) Vacuum Pump
    redball.gif (326 bytes) Screw Top Metal Can
   

NARRATIVE
redball.gif (326 bytes) Method 1
            Simply evacuate the can with the Vacuum Pump and the pressure of the surrounding air will crush the can

redball.gif (326 bytes) Method 2
            Another method is to put about 200 ml of water in the bottom of a screw top 1 gallon can. With the top off, place the can over a lighted Bunsen Burner until the water vaporizes. Immediately replace the cap and remove the heat. As the water vapor condenses a partial vacuum will allow the can to be crushed by the surrounding air.