Double Bubble
[S | t+ | ★★★]
Double your pleasure with this puzzler: small bubble blows up large one.
Laplace's Law and Aneurysms
[M | t | ★★]
Blow up a long cylindrical balloon and it inflates according to Laplace's law.
Holy Siphon
[M | t+ | —]
A siphon with holes in it reveals the pressure within.
Siphon
[M | t+ | ★★]
Transfer of water from one tank to another via rubber hose.
[In-Depth Description]
Water Bottle and Lead Bricks
[L | t+ | —]
Adding a small volume of water to a hydrostatic head connected to a water bottle raises lead bricks.
Vacuum Cannon
[M | t+ | ★★★★]
Air rushing into an evacuated tube pushes a ball down the tube with such a force and speed that it "blasts out" the other end and passes through several soda cans.
Blow-Up Balloon in Vacuum
[M | t+ | —]
A sealed balloon in a bell-jar "blows up" as the jar is evacuated.
[In-Depth Description]
Golf Ball Atmosphere
[L | t | ★★★]
Demonstration of molecular motion and pressure using golf balls.
[In-Depth Description]
Coke Can
[M | t| —]
A coke can with hot water vapor inside implodes dramatically upon touching cold water.
Inverted Pascal Experiment
[L | t++ | ★★★]
Upside-down version of Pascal's barrel-bursting experiment.
[In-Depth Description]
55 Gallon Drum
[L | t+ | ★★★]
Drum evacuated by vacuum pump; crushed by atmospheric pressure.
[In-Depth Description]
Magdeburg Hemispheres
[M | t+ | ★★★]
When evacuated, held together by bombardment of atmospheric molecules.
[In-Depth Description]
Pressure and Depth
[M | t+ | —]
Cylinder with water spouts at different depths.
Pascal's Paradox
[M | t | ★★]
Vessels with identical bases are filled to the same level and placed on a platform scale; scale measures force = area (same) x pressure (same).
[In-Depth Description]
Pascal Vases
[S | t+ | ★★]
Pressure at the bottom of a vessel is proportional to the depth of the liquid and independent of the volume and shape of vessel.
[In-Depth Description]
Fakir Physics
[M | t | ★★★]
The concept of pressure is demonstrated by lying on a bed of nails.