Yotta is the largest decimal unit prefix in the metric system, denoting a factor of 1024 or 1000000000000000000000000. It has the unit symbol Y. The prefix name is derived from the Greek οκτώ (októ), 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]
Usage examples:
- The mass of the Earth is 5.9726 Yg.[2]
- The mass of the oceans is about 1.4 Yg.[3]
- The total power output of the Sun is approximately 385 YW.[4]
- The observable universe is estimated to be 880 Ym in diameter.[5]
- One yottabyte (YB) is a unit of digital information or information storage capacity that contains one septillion bytes or 1,000 zettabytes. The yobibyte (YiB) is a related unit that uses a binary prefix, and means 10248 bytes, which is approximately 1.2 septillion bytes.
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- ^ The metric system was introduced in 1795 with several metric prefixes, of which, however, only six were adopted as SI prefixes by the 11th CGPM conference in 1960, whereas myria (104) as well as double and demi were not adopted. In 1873, micro and mega were recommended by the British Association for the Advancement of Science. The other dates relate to recognition by a resolution of the CGPM.
See also[edit]
References[edit]
- ^ "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.
- ^ http://www.wolframalpha.com/input/?i=+total+power+output+of+the+Sun
- ^ http://www.wolframalpha.com/input/?i=size+of+universe By a simple units conversion, 8.8×1023km = 8.8×1026m = 880×1024m = 880 Ym