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Learn more about "Centimeter"

Centimetre

A '''centimetre''' (American English|American spelling: '''centimeter''', symbol '''cm''') is a Units of measurement|unit of length in the metric system, equal to one hundredth of a metre, which is the current International System of Units|SI SI base unit|base unit of length. Centi is the SI prefix for a factor of .BIPM - SI prefixes Hence a centimetre can be written as (engineering notation) or (Scientific notation#E notation|scientific E notation) — meaning or 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" and 7/16" on an English inch ruler).

Equivalence to other units of length

1 centimetre is ''equal'' to:
- 0.01 metre, which can be represented by 1 E-2 m|1.00 E-2 m (1 metre is equal to 100 centimetres)
- about 0.393700787401575 inch (1 inch is equal to 2.54 centimetres) Inch - from Eric Weisstein's World of Physics 1 cubic centimetre is equal to 1 litre|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 Rain Measurement, Rain Gauge, Wireless Rain Gauge, Rain Gage, Rain Gauge Data
- in the CGS system, the centimetre is used to measure capacitance, where 1 cm of capacitance = 1.113×10

^{-12}

Farad Capacitance - from Eric Weisstein's World of Physics
- 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 language|Chinese, Japanese language|Japanese and Korean (CJK) characters, Unicode has symbols for: http://www.unicode.org/charts/PDF/U3300.pdf CJK Compatibility excerpt from The Unicode Standard, Version 4.1.
- 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.

References

- CJK Compatibility excerpt from The Unicode Standard, Version 4.4 and co-exterior users. Category:Units of length Category:Orders of magnitude (length)|-2 Category:Centimetre gram second system of units Category:SI derived units zh-min-nan:Kong-hun be-x-old:Сантымэтар simple:Centimetre zh-yue:厘米

Related Images

- 1 centimetre
- A carpenters' ruler with centimetre divisions

Sources: StartLearningNow, Wikipedia | Usage license: GNU FDL

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