Femto is an SI prefix (symbol f) in the SI system of units denoting a factor of 10⁻¹⁵ or 0.000 000 000 000 001. Adopted in 1964 by the 12th Conférence Générale des Poids et Mesures, it comes from the Danish or Norwegian femten, meaning fifteen. An SI prefix is a prefix that can be applied to an SI unit to form a decimal multiple or submultiple. ... The International System of Units (abbreviated SI from the French language name Système International dUnités) is the modern form of the metric system. ... For the Nintendo 64 emulator, see 1964 (Emulator). ...

Examples:

• One femtosecond = 10⁻¹⁵ s
• One femtometre = 10⁻¹⁵ m

An SI prefix is a prefix that can be applied to an SI unit to form a decimal multiple or submultiple. ... Long scale is the English translation of the French term échelle longue, which designates a system of numeric names in which the word billion means a million millions. ... Long scale is the English translation of the French term échelle longue, which designates a system of numeric names in which the word billion means a million millions. ... The decimal (base ten or occasionally denary) numeral system has ten as its base. ... Yotta (symbol Y) is a SI prefix in the SI (system of units) denoting 1024 or 1 000 000 000 000 000 000 000 000. ... The standard dictionary numbers Throughout this article, exponential or scientific notation is used. ... The quadrillion is a large number which has one of two values depending on how or where it is being used. ... Zetta (symbol Z) is a SI prefix in the SI (system of units) denoting 1021 or 1 000 000 000 000 000 000 000. ... The standard dictionary numbers Throughout this article, exponential or scientific notation is used. ... In long scale usage: one trilliard = 1,000,000,000,000,000,000,000 = 1021 one thousand trilliards =one (long scale) quadrillion This word is not found in standard English dictionaries. ... In the X Window System, in the X.Org Server, EXA is a graphics acceleration architecture to make the XRender extension more usable, with only minor changes needed to adapt XFree86 video drivers written to use XAA (the XFree86 Acceleration Architecture). ... Main article: Names of large numbers A quintillion is a number written as either: a 1 followed by 18 zeros (10 to the 18th power, as used in the American system of numeration) or a 1 followed by 30 zeros (10 to the 30th power, as used in the British... The numeral trillion refers to one of two number values, depending on the context of where and how it is being used. ... This article describes the SI prefix peta. ... The quadrillion is a large number which has one of two values depending on how or where it is being used. ... For the game, see Billiards In long scale usage: one billiard = 1,000,000,000,000,000 = 1015 = one short scale quadrillion. ... Tera (symbol: T) is a prefix in the SI system of units denoting 1012, or 1 000 000 000 000. ... The numeral trillion refers to one of two number values, depending on the context of where and how it is being used. ... The word billion and its equivalents in other languages refer to one of two different numbers, depending on whether the writer is using the long or short scale. ... Giga (symbol: G) is a prefix in the SI system of units denoting 109, or 1 000 000 000. ... The word billion and its equivalents in other languages refer to one of two different numbers, depending on whether the writer is using the long or short scale. ... Milliard is a French-derived word meaning the number 109. ... Mega (symbol M) is a SI prefix in the SI system of units denoting a factor of 106, i. ... One million (1,000,000), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001. ... Kilo (symbol: k) is a prefix in the SI system denoting 103 or 1000. ... Cardinal 1000 one thousand Ordinal 1000th Numeral system Factorization Prime Divisor(s) Roman numeral Unicode symbol(s) , , Greek Prefix chilia Latin Prefix milli Binary 1111101000 Octal 1750 Duodecimal Hexadecimal 3E8 1000 (one thousand) is the natural number following 999 and preceding 1001. ... Hecto (symbol h) is a SI prefix in the SI system of units denoting a factor of 102 (100). ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ... For the marketing association, see DECA (Organization) For the research company, see DEKA. Deca- (U.S. spelling deka, Greek δέκα) is a Greek prefix meaning ten. ... 10 (ten) is the natural number following 9 and preceding 11. ... Look up one in Wiktionary, the free dictionary. ... Deci (symbol d) is a prefix in the SI system of units denoting a factor of 10−1 (1/10). ... Centi (symbol c) is a SI prefix in the SI system of units denoting a factor of 10-2, or 1/100. ... Milli (symbol m) is an SI prefix in the SI system of units denoting a factor of 10-3, or 1/1,000. ... Micro is a SI prefix in the SI system of units denoting a factor of 10−6 (one millionth). ... Nano is a noun Name for an Apple Brand Ipod available in 2GB and 4GB memory sizes whose purpose is for storing and playing music. ... For other meanings of Pico see Pico (disambiguation) Pico (symbol p) is a prefix in the SI system of units denoting a factor of 10-12. ... Atto- (symbol a) is an SI prefix to a unit and means that it is 10-18 times this unit. ... Zepto (symbol z) is a prefix in the SI system of units denoting a factor of 10-21. ... Yocto (symbol y) is a SI prefix in the SI system of units denoting a factor of 10-24. ...

External links

• Bureau International des Poids et Mesures (BIPM)