The particles of a solid are very close together. It melts when it changes from the solid state to the liquid state. The same mass of liquid will have slightly greater volume than the solid.

Through rigorous testing, this new model displayed a staggering theoretical energy density of 2825 watt-hours per kilogram ...

Density describes how closely packed the particles are in a solid, liquid or gas. There is little difference between the density of a liquid and its corresponding solid (eg water and ice).

Combining concepts from statistical physics with machine learning, researchers at the University of Bayreuth have shown that ...

Effortlessly determine solid density with nitrogen, air, argon, and other gases without the need for extra steps, calibrations, or compromises. Leveraging advanced technology validated in ...