From Citizendium - Reading time: 1 minCast density [r]: A property of explosives most often reported as a dimensionless number, but sometimes in grams per centimeter3; the same explosive chemical may be manufactured in different densities and crystal structures; complex detonation waves can be formed by mixing precisely machined shapes of dense and light explosives, of different detonation velocity, often intermixed with voids or inert material [e]