International System of Units (SI)

International System of Units (SI)

▪ Table
International System of Units (SI)
Base units
unit abbreviation physical quantity
metre m length
second s time
kilogram kg mass
ampere A electric current
kelvin K thermodynamic temperature
candela cd luminous intensity
mole mol amount of substance
Length
unit abbreviation number of metres approximate U.S. equivalent
kilometre km 1,000 0.62 mile
centimetre cm 0.01 0.39 inch
millimetre mm 0.001 0.039 inch
micrometre μm 0.000001 0.000039 inch
nanometre nm 0.000000001 0.000000039 inch
Area
unit abbreviation number of square metres approximate U.S. equivalent
square kilometre sq km, or km2 1,000,000 0.3861 square mile
hectare ha 10,000 2.47 acres
are a 100 119.60 square yards
square centimetre sq cm, or cm2 0.0001 0.155 square inch
Volume
unit abbreviation number of cubic metres approximate U.S. equivalent
cubic metre m3 1 1.307 cubic yards
cubic centimetre cu cm, cm3, or cc 0.000001 0.061 cubic inch
Capacity
unit abbreviation number of litres approximate U.S. equivalent
kilolitre kl 1,000 1.31 cubic yards
litre l 1 61.02 cubic inches
centilitre cl 0.01 0.61 cubic inch
millilitre ml 0.001 0.061 cubic inch
microlitre μl 0.000001 0.000061 cubic inch
Mass and weight
unit abbreviation number of grams approximate U.S. equivalent
metric ton t 1,000,000 1.102 short tons
gram g 1 0.035 ounce
centigram cg 0.01 0.154 grain
milligram mg 0.001 0.015 grain
microgram μg 0.000001 0.000015 grain
Energy
unit symbol physical quantity expressed in base units
hertz Hz frequency 1/s
newton N force, weight (m × kg)/s2
joule J work, energy, quantity of heat (m2 × kg)/s2
pascal Pa pressure, stress kg/(m × s2)
watt W power (m2 × kg)/s3
coulomb C electric charge s × A
volt V electric potential difference (m2 × kg)/(s3 × A)
farad F electric capacitance (s2 × s2 × A2)/(m2 × kg)
ohm Ω electric resistance, reactance (m2 × kg)/(s3 × A2)
siemens S electric conductance (s3 × A2)/(m2 × kg)
weber Wb magnetic flux (m2 × kg)/(s2 × A)
tesla T magnetic induction kg/(s2 × A)
henry H inductance (m2 × kg)/(s2 × A2)
lumen lm luminous flux cd × sr
lux lx illuminance (cd × sr)/m2
See as table:

* * *


Universalium. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • International System of Units — n. SI …   English World dictionary

  • International System of Units — SI redirects here. For other uses, see Si (disambiguation). Cover of brochure The International System of Units The International System of Units[1] (abbreviated SI from French: Système international d unités[2]) is the modern …   Wikipedia

  • International System of Units — an internationally accepted coherent system of physical units, derived from the MKSA system, using the meter, kilogram, second, ampere, kelvin, mole, and candela as the basic units (SI units) of the fundamental quantities length, mass, time,… …   Universalium

  • international system of units — tarptautinė vienetų sistema statusas T sritis fizika atitikmenys: angl. international system of units; SI system vok. internationales Einheitensystem, n; SI System, n rus. международная система единиц, f; система СИ, f pranc. système d’unités… …   Fizikos terminų žodynas

  • International System of Units — Tarptautinė vienetų sistema statusas T sritis Standartizacija ir metrologija apibrėžtis Suderintoji matavimo vienetų sistema, kurią patvirtino ir rekomendavo Generalinė svarsčių ir matų konferencija (CGPM – Conférence générale des poids et… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • International System of Units — Tarptautinė vienetų sistema statusas T sritis ekologija ir aplinkotyra apibrėžtis Suderintoji matavimo vienetų sistema, kurią patvirtino ir rekomendavo Generalinė svarsčių ir matų konferencija (CGPM – Conférence générale des poids et mesures).… …   Ekologijos terminų aiškinamasis žodynas

  • International System of Units — A system of measurements, based on the metric system, adopted at the 11th General Conference on Weights and Measures of the International Organization for Standardization (1960) to cover both the coherent units (basic, supplementary, and derived… …   Medical dictionary

  • International System of Units — noun a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous… …   Useful english dictionary

  • International System of Units — noun Date: 1932 a system of units based on the metric system and developed and refined by international convention especially for scientific work abbreviation SI …   New Collegiate Dictionary

  • international system of units — noun the SI system of units …   English new terms dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”