Intern:Quantity Kinds and Units

This wiki page deals with measurement quantities, their dimensions and units.

=Definitions=

Quantity kind definition
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Dimension definition
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Unit definition
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=Standardizations=

System of Units (SI)

 * NIST - Guide for the Use of the International System of Units (SI)
 * NIST - The International System of Units (SI) – Conversion Factors  for General Use
 * NIST - The international system of units (SI)
 * IEEE/ASTM Standard for Use of the International System of Units (SI): The Modern Metric System (2002)
 * https://www.bipm.org/en/measurement-units/

=Semantic approaches=

Quantities, Units, Dimensions and Type (QUDT)

 * http://www.qudt.org/
 * http://www.linkedmodel.org/catalog/qudt/1.1/index.html
 * https://units.unf.edu/

The Unified Code for Units of Measure (UCUM)
http://unitsofmeasure.org/ucum.html

Quantities, Units, Dimensions and Values (QUDV)
https://www.w3.org/2005/Incubator/ssn/ssnx/qu/qu

Further semantic projects

 * Units Markup Language (UnitsML)
 * https://sweet.jpl.nasa.gov/
 * https://bioportal.bioontology.org/ontologies/UO
 * https://www.oasis-open.org/committees/quomos (discontinued)

=Conversion tools=

PANGAEA tool
Alpha test version of unit to quantity converter (tool written by Robert Huber):

http://dataportals.pangaea.de/test/ucum/?html

http://dataportals.pangaea.de/test/ucum/?ucum=C

External tools

 * http://www.wolframalpha.com/ (unit conversion, quantity kind interpretion)

=Educational material=
 * http://www.scientificstyleandformat.org/Home.html


 * http://www.cleavebooks.co.uk/dictunit/


 * https://physics.nist.gov/cuu/Units/index.html

Related wikipedia pages:


 * https://en.wikipedia.org/wiki/Physical_quantity


 * https://en.wikipedia.org/wiki/Physical_property


 * https://en.wikipedia.org/wiki/International_System_of_Units


 * https://en.wikipedia.org/wiki/ISO/IEC_80000


 * https://en.wikipedia.org/wiki/Metrology


 * https://en.wikipedia.org/wiki/Quantities,_Units_and_Symbols_in_Physical_Chemistry


 * https://en.wikipedia.org/wiki/Intensive_and_extensive_properties


 * https://en.wikipedia.org/wiki/Metric_system


 * https://en.wikipedia.org/wiki/Dimensional_analysis

=Domain specific quantity kinds and units=

Chemical quantities and units
Quantities in the IUPAC Goldbook: https://goldbook.iupac.org/lists/list_goldbook_quantities_defs_A.html

Official recommendations and standardizations

 * Units of enzyme activity - Recommendations 1978

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