Why do some gases rise in the air while other gases sink? Why do some gases rise in the air while other gases sink? It all has to do with how heavy the molecules are compared to the air itself! Watch ...

The properties of dense helium (He) — which happens to be a principal constituent of giant gas planets like Jupiter — at thermodynamic conditions between those of condensed matter and high-temperature ...

Suggested Citation:" Executive Summary." National Research Council. 2003. Frontiers in High Energy Density Physics: The X-Games of Contemporary Science. Washington, DC: The National Academies Press.

China’s latest advance with its so‑called artificial sun has pushed fusion plasma into a regime many physicists long treated as off limits, smashing through a density ceiling that had constrained ...

Create a colorful tower of liquids that stack on top of each other based on their densities. This experiment demonstrates how different liquids have different densities and why some liquids float ...

Changing the state of a material will change its density There is little difference between the density of a liquid and its corresponding solid, eg water and ice. This is because the particles are ...