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.
Dropping bag containing lead turns gravitational potential energy to heat.
What it shows:
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.
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...