- Centimetre
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1 centimetre = SI units 10×10−3 m 10 mm US customary / Imperial units 32.81×10 −3 ft 0.39370 in A centimetre (American spelling: centimeter, symbol cm) is a unit of length in the metric system, equal to one hundredth of a metre, which is the SI base unit of length. Centi is the SI prefix for a factor of 10−2.[1] Hence a centimetre can be written as 10×10−3 m (engineering notation) or 1E−2 m (scientific E notation) — meaning 10 mm or 1 m/100 respectively. The centimetre is the base unit of length in the now deprecated centimetre-gram-second (CGS) system of units.
Though for many physical quantities, SI prefixes for factors of 103—like milli- and kilo-—are often preferred by technicians, the centimetre remains a practical unit of length for many everyday measurements. A centimetre is approximately the width of the fingernail of an adult person (between 3/8 in and 7/16 inch on an English inch ruler).
Contents
Equivalence to other units of length
1 centimetre is equal to:
- 0.01 metre, which can be represented by 1.00 E-2 m (1 metre is equal to 100 centimetres)
- about 0.393700787401575 inch (1 inch is equal to 2.54 centimetres) [2]
1 cubic centimetre is equal to 1 millilitre, under the current SI system of units.
Uses of centimetre
In addition to its use in the measurement of length, the centimetre is used:
- sometimes, to report the level of rainfall as measured by a rain gauge [3]
- in the CGS system, the centimetre is used to measure capacitance, where 1 cm of capacitance = 1.113×10 − 12 Farad [4]
- in maps, centimetres are used to make conversions from map scale to real world scale (kilometres)
- to represent second moment of areas (cm^4)
Unicode symbols
For the purposes of compatibility with Chinese, Japanese and Korean (CJK) characters, Unicode has symbols for: [5]
- centimetre (㎝) - code 339D
- square centimetre (㎠) - code 33A0
- cubic centimetre (㎤) - code 33A4
They are mostly used only with East Asian fixed-width CJK fonts, because they are equal in size to one Chinese character.
See also
- 1 E-2 m
- Conversion of units, for comparison with other units of length
- Reciprocal centimetre
- Metric system
- Orders of magnitude (length)
- SI
- SI prefix
References
- ^ BIPM - SI prefixes
- ^ Inch - from Eric Weisstein's World of Physics
- ^ Rain Measurement, Rain Gauge, Wireless Rain Gauge, Rain Gage, Rain Gauge Data
- ^ Capacitance - from Eric Weisstein's World of Physics
- ^ [1] CJK Compatibility excerpt from The Unicode Standard, Version 4.1.
- CJK Compatibility excerpt from The Unicode Standard, Version 4.4 and co-exterior users.
SI units of length yoctometre <<< zeptometre <<< attometre <<< femtometre <<< picometre <<< nanometre <<< micrometre <<< millimetre < centimetre < decimetre < metre < decametre < hectometre < kilometre <<< megametre <<< gigametre <<< terametre <<< petametre <<< exametre <<< zettametre <<< yottametreCategories:- Units of length
- Orders of magnitude (length)
- Centimetre gram second system of units
- SI derived units
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См. также в других словарях:
centimètre — [ sɑ̃timɛtr ] n. m. • 1793; de centi et mètre 1 ♦ Centième partie du mètre (abrév.cm). Centimètre carré (cm2), cube (cm3). 2 ♦ Centimètre de couturière, de tailleur : ruban gradué servant à prend … Encyclopédie Universelle
Centimetre — Centimètre Un centimètre (symbole cm) vaut 10 2 = 0,01 mètre. 1 cm = 10 2 m = 0,01 m ; 1 m = 102 cm = 100 cm. Le centimètre est une des unités de base du système CGS. Il permet de définir une unité d aire, le centimètre carré (cm²) : un … Wikipédia en Français
centimetre — UK US UK (US centimeter) /ˈsentɪˌmiːtər/ noun [C] (ABBREVIATION cm) ► MEASURES a unit of measurement of length in the metric system, equal to 0.01 metres or 0.3937 inches: »Bangkok is sinking at the rate of up to five centimetres (two inches) a… … Financial and business terms
centimètre — m. centimètre … Diccionari Personau e Evolutiu
Centimetre — (spr. Sangtimetr), französisches Maß, der 100. Theil eines Metre, etwa 4 Pariser Linie … Pierer's Universal-Lexikon
centimètre — CENTIMÈTRE. s. m. Mesure de longueur qui est la centième partie du mêtre, et la dixième partie d un décimètre. Elle remplace le pouce, et vaut à peu près 4 lignes 1/2 … Dictionnaire de l'Académie Française 1798
centimetre — (US centimeter) ► NOUN ▪ a metric unit of length equal to one hundredth of a metre … English terms dictionary
Centimètre — Un centimètre (symbole cm) vaut 10 2 = 0,01 mètre : 1 cm = 10 2 m = 0,01 m ; 1 m = 102 cm = 100 cm. Le centimètre est une des unités de base du système CGS. Il permet de définir : une unité d aire, le… … Wikipédia en Français
CENTIMÈTRE — s. m. Nouvelle mesure de longueur, la centième partie du mètre. Centimètre carré. Centimètre cube Un mètre cinquante huit centimètres … Dictionnaire de l'Academie Francaise, 7eme edition (1835)
CENTIMÈTRE — n. m. T. de Système métrique Mesure de longueur, la centième partie du mètre. Centimètre carré. Centimètre cube. Un mètre cinquante huit centimètres. Il se dit aussi d’un Ruban d’environ un mètre cinquante, divisé en centimètres et servant à… … Dictionnaire de l'Academie Francaise, 8eme edition (1935)