Double Bubble

[S | t+ | ★★★]
Double your pleasure with this puzzler: small bubble blows up large one.

[In-Depth Description]

Laplace's Law and Aneurysms

[M | t | ★★]
Blow up a long cylindrical balloon and it inflates according to Laplace's law.

[In-Depth Description]

Holy Siphon

[M | t+ | —]
A siphon with holes in it reveals the pressure within.


[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.

[In-Depth Description]

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.

[In-Depth Description]