Femto-

Femto- (symbol f) is a unit prefix in the metric system denoting a factor of 10−15 or 0.000000000000001. Adopted by the 11th General Conference on Weights and Measures,[1] it was added in 1964 to the SI.[2] It is derived from the Danish word femten, meaning "fifteen".

Examples of use:

The femtometre shares the unit symbol (fm) with the older non-SI unit fermi, to which it is equivalent. The fermi, named in honour of Enrico Fermi, is often encountered in nuclear physics.

PrefixBase 1000Base 10DecimalEnglish wordAdoption[nb 1]
NameSymbolShort scaleLong scale
yottaY 10008 10241000000000000000000000000 septillion quadrillion1991
zettaZ 10007 10211000000000000000000000 sextillion trilliard1991
exaE 10006 10181000000000000000000 quintillion trillion1975
petaP 10005 10151000000000000000 quadrillion billiard1975
teraT 10004 10121000000000000 trillion billion1960
gigaG 10003 1091000000000 billion milliard1960
megaM 10002 1061000000 million1873
kilok 10001 1031000 thousand1795
hectoh 10002/3 102100 hundred1795
decada 10001/3 10110 ten1795
 10000 1001 one
decid 1000−1/3 10−10.1 tenth1795
centic 1000−2/3  10−20.01 hundredth1795
millim 1000−1 10−30.001 thousandth1795
microµ 1000−2 10−60.000001 millionth1873
nanon 1000−3 10−90.000000001 billionth milliardth1960
picop 1000−4 10−120.000000000001 trillionth billionth1960
femtof 1000−5 10−150.000000000000001 quadrillionth billiardth1964
attoa 1000−6 10−180.000000000000000001 quintillionth trillionth1964
zeptoz 1000−7 10−210.000000000000000000001 sextillionth trilliardth1991
yoctoy 1000−8 10−24 0.000000000000000000000001 septillionth quadrillionth1991
  1. ^ Prefixes adopted before 1960 already existed before SI. 1873 was the introduction of the CGS system.

References

  1. ^ The International System of Units (SI) (PDF) (8th ed.), ISBN archived (PDF) from the original on 2017-08-14 
  2. ^ BIPM - Resolution 8 of the 12th CGPM

Character from Berserk

Other Languages
العربية: فيمتو (سابقة)
български: Фемто-
brezhoneg: Femto
català: Femto-
čeština: Femto
Deutsch: Femto
eesti: Femto-
español: Femto
Esperanto: Femto
euskara: Femto
فارسی: فمتو
français: Femto
galego: Femto-
한국어: 펨토
Հայերեն: Ֆեմտո
हिन्दी: फैम्टो-
Bahasa Indonesia: Femto-
italiano: Femto
ქართული: ფემტო...
lietuvių: Femto-
മലയാളം: ഫെംറ്റോ-
Nederlands: Femto
日本語: フェムト
norsk: Femto
norsk nynorsk: Femto
ភាសាខ្មែរ: ហ្វង់តូ
Plattdüütsch: Femto
polski: Femto
português: Femto
Ripoarisch: Femto
română: Femto
русский: Фемто-
sicilianu: Femto
slovenščina: Femto
کوردی: فێمتۆ-
српски / srpski: Фемто
suomi: Femto
svenska: Femto
ไทย: เฟมโต
Türkçe: Femto-
українська: Фемто-
Tiếng Việt: Femtô
中文: 飞母托