[Guille]

Originally Posted by AntonioLao

angular momentum times time equals the product of mass and area, which is linear mass density for the outward flux of a control volume for an isolated system.

is there another type of density for mass than linear?

[AntonioLao]

Originally Posted by GUILLE

is there another type of density for mass than linear?

There are surface density, volume density, and n-sphere volume densities. where n approaches infinity. But the ratio of n-sphere over cubic volumes approaches zero as n approaches infinity. Will supply the web link when I come back from lunch.

[Guille]

I just realise the diff in hours there and here isn't that big. What is it then meant by linear mass density?

[AntonioLao]

Originally Posted by GUILLE

What is it then meant by linear mass density?

the energy or mass density of a string as in superstring theories. For more information about higher dimensional volumes please see http://scienceworld.wolfram.com/phys...lAnalysis.html