the.com/density
how much universe you stuffed into how little room — the cosmic packing problem
means How much mass or stuff is packed into a given amount of space — and, figuratively, how thickly anything (people, fog, ideas) is crowded together.
from From Latin densus, "thick, crowded, close-packed," which gave the adjective dense and, with the noun-making suffix -ity (Latin -itas, the quality of being something), the abstract density — literally "the quality of being thick." English borrowed it in the 17th century, partly by way of French densité, just as natural philosophy was learning to measure how much weight hides in how little volume.
- neutron star
- a sugar cube's worth weighs a billion tons
- osmium king
- densest natural element, sinks even in mercury
- black hole
- density so absurd geometry itself surrenders
- empty atoms
- matter is mostly void wearing a costume
- ice trick
- freezes less dense, so it floats and saves fish
osmium — densest naturally occurring element at 22.59 g/cm³
neutron star — 1 teaspoon would weigh 6 billion tons, denser than any terrestrial matter
manhattan — 27,000 people per square mile, one of earth's densest urban areas