About: Specific Gravity   Goto Sponge  NotDistinct  Permalink

An Entity of Type : http://hadatac.org/ont/hasco/QuantityVariable, within Data Space : covidontheweb.inria.fr associated with source document(s)

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  • Specific Gravity
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  • Why is this here? Maybe it belongs in another list
definition
  • Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. The reference substance is nearly always water at its densest (4°C) for liquids; for gases it is air at room temperature (21°C). Nonetheless, the temperature and pressure must be specified for both the sample and the reference. Pressure is nearly always 1 atm (101.325 kPa). Temperatures for both sample and reference vary from industry to industry.
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