Pressure is one of the fundamental thermodynamic variables. It affects intermolecular interactions and interatomic properties. Under extreme conditions such as high pressure, materials exhibit ...

Demonstrates basic principles of water, including surface tension, pressure, and buoyancy. It shows how water can hold more than its brim due to surface tension, how pressure increases with depth, and ...

Hydrogen, the most abundant element in the universe, is found as a gas in our atmosphere. In 1935, Eugene Wigner and Hillard Bell Huntington put out a theory that at high enough pressures, hydrogen ...