Wikipedia
Critical density
Critical density may refer to:
- Critical density (cosmology), the matter density of a spatially flat Universe
- Critical density (thermodynamics), the density of a substance at its thermodynamic critical point
- Critical plasma density, the density at which the plasma frequency equals the frequency of an electromagnetic electron wave in plasma
Usage examples of "critical density".
Yachem assumed that at some point, the egg would reach a critical density and explode again, creating a new universe.
It would be an amazing coincidence if, by accident, the actual density were so close to the critical density.
Planar effect fields which are warped tend to contract towards their geometric centers, but cannot contract fully if obstructed by matter in concentrations above the critical density.
A little taken here, a little put there, to keep it precisely at this critical density?
Well, the critical density-that is, the total mass of everything in the universe, divided by the total volume of the universe-turns out to be about five times ten-to-the-minus-thirtieth power grams per cubic centimeter.