Yotta-
Yotta is the largest decimal unit prefix in the metric system, denoting a factor of 1024 (1000000000000000000000000), or one septillion. It has the symbol Y. The prefix name is derived from the Ancient Greek ὀκτώ (oktṓ), meaning eight, because it is equal to 10008. It was added as an SI prefix to the International System of Units (SI) in 1991.[1]
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Look up yotta- in Wiktionary, the free dictionary. |
Usage examples
- The mass of the Earth is 5972.6 Yg (yottagrams).[2]
- The mass of the oceans is about 1.4 Yg.[3]
- The total power output of the Sun is approximately 385 YW (yottawatts).[4]
- The observable universe is estimated to be 880 Ym (yottametres) in diameter.[5]
- One yottabyte (YB) is a unit of digital information or information storage capacity for one septillion bytes or 1000 zettabytes. The yobibyte (YiB) is a related unit that uses a binary prefix and means 10248 bytes, which is approximately 1.2 septillion bytes.
| Prefix | Base 10 | Decimal | English word | Adoption[nb 1] | Etymology | |||
|---|---|---|---|---|---|---|---|---|
| Name | Symbol | Short scale | Long scale | Language | Derived word | |||
| yotta | Y | 1024 | 1000000000000000000000000 | septillion | quadrillion | 1991 | Greek | eight[nb 2] |
| zetta | Z | 1021 | 1000000000000000000000 | sextillion | trilliard | 1991 | Latin | seven[nb 2] |
| exa | E | 1018 | 1000000000000000000 | quintillion | trillion | 1975 | Greek | six |
| peta | P | 1015 | 1000000000000000 | quadrillion | billiard | 1975 | Greek | five[nb 2] |
| tera | T | 1012 | 1000000000000 | trillion | billion | 1960 | Greek | four,[nb 2] monster |
| giga | G | 109 | 1000000000 | billion | milliard | 1960 | Greek | giant |
| mega | M | 106 | 1000000 | million | 1873 | Greek | great | |
| kilo | k | 103 | 1000 | thousand | 1795 | Greek | thousand | |
| hecto | h | 102 | 100 | hundred | 1795 | Greek | hundred | |
| deca | da | 101 | 10 | ten | 1795 | Greek | ten | |
| 100 | 1 | one | – | |||||
| deci | d | 10−1 | 0.1 | tenth | 1795 | Latin | ten | |
| centi | c | 10−2 | 0.01 | hundredth | 1795 | Latin | hundred | |
| milli | m | 10−3 | 0.001 | thousandth | 1795 | Latin | thousand | |
| micro | μ | 10−6 | 0.000001 | millionth | 1873 | Greek | small | |
| nano | n | 10−9 | 0.000000001 | billionth | milliardth | 1960 | Greek | dwarf |
| pico | p | 10−12 | 0.000000000001 | trillionth | billionth | 1960 | Spanish | peak |
| femto | f | 10−15 | 0.000000000000001 | quadrillionth | billiardth | 1964 | Danish | fifteen, Fermi[nb 3] |
| atto | a | 10−18 | 0.000000000000000001 | quintillionth | trillionth | 1964 | Danish | eighteen |
| zepto | z | 10−21 | 0.000000000000000000001 | sextillionth | trilliardth | 1991 | Latin | seven[nb 2] |
| yocto | y | 10−24 | 0.000000000000000000000001 | septillionth | quadrillionth | 1991 | Greek | eight[nb 2] |
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See also
References
- "Resolution 4 of the 19th CGPM (Conférence Générale des Poids et Mesures)". BIPM (Bureau International des Poids et Mesures).
- Williams, David R. "Earth fact sheet". Earth fact sheet. NASA. Retrieved 31 October 2015.
- Kennish, Michael J. (2001). Practical handbook of marine science. Marine science series (3rd ed.). CRC Press. p. 35. ISBN 0-8493-2391-6.
- "WolframAlpha: the Sun's total power output in yottawatts".
- "WolframAlpha: size of universe in yottameters".
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