5 ms·

> a new band of storage areal density has finally arrived Surely 'density' is a measure of stuff per area? Does 'areal density' have an additional meaning?

• automatic6131 1y ago
  Areal is the adjective form of area.
  • afandian 1y ago
    My question is why add an extra adjective when 'density' is sufficient? Does 'areal density' means 'stuff per area _per area_'? I.e. volmetric?
    • IanCal 1y ago
      Density doesn’t mean specifically per unit area though. In fact the default meaning without context to me would be volumetric.
• AndrewDucker 1y ago
  You get linear density (for density along a line) and also volumetric density (scales with volume). So you're basically making it clear how many dimensions are important to your measurement. https://en.wikipedia.org/wiki/Area_density https://en.wikipedia.org/wiki/Area_density
• echoangle 1y ago
  > Surely 'density' is a measure of stuff per area? Not really, the normal definition of density is mass per volume. If you mean something else (like storage capacity per area), it needs to be specified.