ما الفرق بين Conventional Units و SI Units ؟

[gheriafi]

أخوتي
أنا آسف لأسئلتي البدائية، ولكنني أقوم بدراسة و أريد الإستفسار عن الفرق بين Conventional Units و SI Units؟

مثال:
Blood Test: T3 Free
Conventional Units: 230-420 pg/dL
SI Units: 3.5-6.5 pmol/L

[الواقع والحياد]

على عجالة تفضل أخي الكريم :


Conversion of units
Conversion of units refers to conversion factors between different units of measurement for the same quantity.



SI=International System of Units

The International System of Units (abbreviated SI from the French Le Système international d'unités) is the modern form of the metric system. It is the world's most widely used system of units, both in everyday commerce and in science.

http://www.gazzaz.net/wcmn/gazzaz/fld0/200706/si.bmp

هذه فروقات بسيطه لذا لابد من الرجوع للروابط التاليه و فقك الله .....

A Dictionary of Units of Measurement (http://www.unc.edu/~rowlett/units/)

http://www.ex.ac.uk/cimt/dictunit/dictunit.htm

http://physics.nist.gov/cuu/Units/units.html

http://en.wikipedia.org/wiki/Conversion_of_units

http://en.wikipedia.org/wiki/SI

http://physics.nist.gov/cuu/Units/index.html


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