Demonstrates the magnitude of atmospheric pressure by evacuating a metal coffee can and then striking it with mallets to initiate buckling. The can leaps off the vacuum platform and collapses …
Two evacuated hemispheres cannot be pulled apart by student volunteers, dramatically illustrating that atmospheric pressure exerts enormous force over even modest areas. Challenges the misconception that vacuum "sucks" -- it …
Demonstrates the magnitude of atmospheric pressure. Two cylinder halves are evacuated with a vacuum pump; students pulling on the rope and bar cannot separate them. Opening the valve readmits air …
A suction cup lifts a heavy lab jack, demonstrating that atmospheric pressure -- not "suction" -- provides the holding force . A clever release mechanism breaks the seal instantly to …
Water stays suspended in a sealed tube or inverted mesh-covered cup, showing that atmospheric pressure can support a water column. For short columns, the required pressure difference is trivial compared …
A balloon inside a flask remains inflated despite being open to the air -- an apparent paradox. Demonstrates that gas flow requires both a pressure gradient and a path for …
