Compression of gas within bicycle pump heats gas; alternatively, syringe PV=nRT (w/ Mac TC read-out).
An adiabatic process is one where no heat enters or leaves a system. Here we compress a gas adiabatically inside a bicycle pump. The work...
Food coloring in glycerine is mixed by turning a drum, then unmixed by reversing. Has entropy decreased?
Ink is squirted into a fluid and mixed in until it disappears. By precisely undoing the motions in the reverse direction, the ink...
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...
Ink is squirted into a fluid and mixed in until it disappears. By precisely undoing the motions in the reverse direction, the ink becomes unmixed! The demonstration seems to defy thermodynamics in that it appears that entropy decreases...
Dropping bag containing lead turns gravitational potential energy to heat.
A demonstration of the conversion of gravitational potential energy to heat energy. A bag of lead shot, repeatedly dropped to the ground, will heat up.
L...
Sealed tubes of a mixture of NO2 and N2O4 gas are placed in ice water and in boiling water, and an instant change in the equilibrium system is demonstrated, according to Le Chatelier’s Principle.
