A siphon is a device that allows the transfer of a fluid from one reservoir to a second at a lower level even though the first part of the journey is up-hill.
A siphon is effectively an inverted U-tube with unequal length tubes...
A sealed balloon in a bell-jar "blows up" as the jar is evacuated.
Cyclohexane vapor catches on fire when it flows downwards to a burning candle at the bottom of a ramp.
Cyclohexane is a clear, organic liquid with a formula of C6H12.
Because cyclohexane is a nonpolar molecule with only weak...
A model of molecular motion and pressure using practice golf balls.
The kinetic energy of gas molecules bouncing off a surface causes pressure.
Increasing the molecules' speeds increases the pressure and the volume of the gas.
Pla...
James Clerk Maxwell postulated that since heat involves the movement of molecules, it might be possible to separate hot and cold air in a device with the help of a "friendly demon" who would sort out and separate the fast and slow moving...
Three containers are filled with water to the same depth, and each has the same base surface area (see figure 1). Since the pressure and area are the same in each container, the force should be the same (pressure = force/area).
The setup shows the direct comparison between four capillary tubes of different bores. The...
When evacuated, held together by bombardment of atmospheric molecules.
Two brass hemispheres are brought together and evacuated, and are held together by the pressure of the atmosphere.
Two brass hemispheres fit together to form...
Blow up a long cylindrical balloon and it inflates according to Laplace's law. Arteries, which also need to be flexible, are designed to fight against the kind of aneurysms seen in inflating rubber balloons.
Laplace's law for...
