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Relative density

Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass divided by volume) of a substance to the density of a given reference material. The relative density of solids and liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, the reference is…

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Common symbols
R D {\displaystyle \mathrm {RD} } , S G {\displaystyle \mathrm {SG} }
Derivations from other quantities
R D = ρ s a m p l e ρ H 2 O {\displaystyle \mathrm {RD} ={\frac {\rho _{\mathrm {sample} }}{\rho _{\mathrm {H_{2}O} }}}}
SI unit
Unitless

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Relative density

Nodes102
Edges101
Triples105
Avg. degree1.98
Density0.019608
Components1

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Relative density

Top relations

related to Temperature dependence · 18
Relative density → C/20, C/4, For, Here, IPTS-68, It, ITS-90, On, RD, RDH2O, SG, SGH2O, Taking, Temperatures, The, Tr, Ts, Ts/Tr
measured by · 17
Relative density → Alternatively, Although, Area, Cylinder, Deflection, Displacement, For, Gravity, Mass, Mass Volume, One, Relative, Spring Constant, Spring Constant Gravity Displacement, The, Volume, WaterLine
related to Uses · 17
Relative density → As, British RD, C/15, C/17, C/20, C/4, For, Gemologists, In, IPTS-68, North America, Plato, RD, Relative, SG, The ASBC, Water
related to External links · 9
Relative density → April, Beverage Manufacturing, CPE Systems, Craft Food, May, Relative, Various Products, Viscosity Table, Weights Of Materials
related to Basic calculation · 8
Relative density → By, Greek, If, In SI, RD, Relative, SG, The
related to Digital density meters · 8
Relative density → Hydrostatic Pressure-based Instruments, In, Pascal's Principle, The, These, This, U-tube, Vibrating Element Transducers
related to Hydrostatic weighing · 5
Relative density → RD, Relative, Using, Wair, Wwater
related to Limitations · 4
Relative density → Errors, It, One, Relative
related to Pycnometer · 4
Relative density → Ancient Greek, If, The, This
related to Examples · 3
Relative density → RD, Samples, Substances

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Important terminology

density relative water reference sample volume rho mass liquid displaystyle mathrm rd temperature hydrometer fluid air measured used pressure sg

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Relative densityCommon symbolsR D {\displaystyle \mathrm {RD} } , S G {\displaystyle \mathrm {SG} }1.00infobox
Relative densityDerivations from other quantitiesR D = ρ s a m p l e ρ H 2 O {\displaystyle \mathrm {RD} ={\frac {\rho _{\mathrm {sample} }}{\rho _{\mathrm {H_{2}O} }}}}1.00infobox
Relative densitySI unitUnitless1.00infobox
Relative densityis aindicator of both the concentration of particles in the urine and a patient's degree of hydration0.90text
brinesinstance ofRelative density is commonly used in industry as a simple means of obtaining information about the concentration of solutions of various materials0.80text
must weightinstance ofRelative density is commonly used in industry as a simple means of obtaining information about the concentration of solutions of various materials0.80text
densityinstance ofFluid properties0.80text
viscosity can be inferred from the spectrum.Radiation-based Gaugeinstance ofFluid properties0.80text
Relative densitymeasured byRelative0.60section
Relative densitymeasured byThe0.60section
Relative densitymeasured byAlthough0.60section
Relative densitymeasured byOne0.60section

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