+Specific Gravity is a dimensionless quantity revealing how dense a substance is relative to a standard. It is the [ratio](/wiki/ratio) of a substance's [density](/wiki/density) to the density of a reference, often water, indicating its propensity to float or sink.
+## See also
+- [Density](/wiki/density)
+- [Buoyancy](/wiki/buoyancy)
+- [Fluid](/wiki/fluid)
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