It took us about 15 minutes to come out of the subway because of the density of crowd.
Second, everyone who actually studies the subject—save Kotkin—agrees that cities and density spur economic growth.
A new urban revolution is upon us, driven in large part by the returns to density, skills, and creativity.
When the frequency goes up, it means the density of the plasma is increasing.
Gurnett knew that he could use the vibrations in the plasma to determine its density.
If the density be inversely as the distances, the periodic times will be equal.
We shall see that this is so when we come to deal with the density of the Aether.
This supposes that the density of the stars in each part of the Galaxy is the same.
There was a density to the darkness that almost excluded the penetration of thought.
Beyond this the density sinks to less than 200 per hectare and less than fifty on the outskirts.
density den·si·ty (děn'sĭ-tē)
The mass per unit volume of a substance at a specified pressure and temperature.
The quantity of something per unit measure, especially per unit length, area, or volume.
A measure of the quantity of some physical property (usually mass) per unit length, area, or volume (usually volume). ◇ Mass density is a measure of the mass of a substance per unit volume. Most substances (especially gases such as air) increase in density as their pressure is increases or as their temperature decreases. ◇ Energy density is a measure of the amount of energy (often in the form of electromagnetic radiation) per unit volume in a region of space or some material. See also Boyle's law.