Dictionary
Base unit
A measurement unit adopted by convention for a base quantity — in the SI: second, metre, kilogram, ampere, kelvin, mole, candela. VIM (JCGM 200:2012…
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53 results for “Base unit”
Documents
SP 330 — International System of Units
…The seven defining constants of the SI and the seven corresponding units they define .................................................................................................................. 4 Table 2. SI base units .......................................................................................................... 6 Table 3. Base…
Documents
SP 811 — Guide for the Use of SI Units
Guide for the Use of the International System of Units (SI) 4 4.1 SI base units Table 1 gives the seven base quantities…
Dictionary
International System of Units (SI)
The system of units based on the ISQ, with unit names, symbols, prefixes, and rules for their use, adopted by the CGPM. Since the…
Dictionary
Unit equation
A mathematical relation between base and derived units — N = kg·m·s⁻². VIM (JCGM 200:2012) 1.23 Standards & Units
Dictionary
Coherent system of units
A system of units in which every derived unit is coherent — the SI as used with its base and coherent derived units. VIM (JCGM…
Dictionary
System of units
A set of base and derived units, with their multiples and submultiples, defined under given rules for a given system of quantities. VIM (JCGM…
Dictionary
Base quantity
…VIM (JCGM 200:2012) 1.4 Standards & Units
Dictionary
Derived unit
A measurement unit for a derived quantity, formed as a product of powers of base units — the newton (kg·m·s⁻²) or the…
Dictionary
Coherent derived unit
A derived unit that is a product of powers of base units with no numerical factor other than one — the newton is coherent in…