The particle density or true density of a particulate solid or powder, is the density of the particles that make up the powder, in contrast to the bulk density, which measures the average density of a large volume of the powder in a specific medium (usually air). The particle density is a relatively well-defined quantity, as it is not dependent on...
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http://en.wikipedia.org/wiki/Particle_density
(from the article `density`) ...weight per unit volume of substances are also available; this quantity has various titles, such as weight density, specific weight, or unit ...
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http://www.britannica.com/eb/a-z/p/23
an important parameter in establishing an entrained particle's potential to impinge on control surfaces and cause erosion.
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http://www.encyclo.co.uk/local/21121
No exact match found.
