Derived SI unit in the context of Coherent derived unit

⭐ Core Definition: Derived SI unit

SI derived units are units of measurement derived from theseven SI base units specified by the International System of Units (SI). They can be expressed as a product (or ratio) of one or more of the base units, possibly scaled by an appropriate power of exponentiation (see: Buckingham π theorem). Some are dimensionless, as when the units cancel out in ratios of like quantities.SI coherent derived units involve only a trivial proportionality factor, not requiring conversion factors.

The SI has special names for 22 of these coherent derived units (for example, hertz, the SI unit of measurement of frequency), but the rest merely reflect their derivation: for example, the square metre (m), the SI derived unit of area; and the kilogram per cubic metre (kg/m or kg⋅m), the SI derived unit of density.

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Derived SI unit in the context of Specific property

In the natural sciences, including physiology and engineering, the qualifier specific or massic typically indicates an intensive quantity obtained by dividing an extensive quantity of interest by mass. For example, specific leaf area is leaf area divided by leaf mass.Derived SI units involve reciprocal kilogram (kg), e.g., square metre per kilogram (m⋅kg); the expression "per unit mass" is also often used.

In some fields, like acoustics, "specific" can mean division by a quantity other than mass.

View the full Wikipedia page for Specific property

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Derived SI unit in the context of Coherent derived unit

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⭐ Core Definition: Derived SI unit

Derived SI unit in the context of Specific property