 |
 |
|
 |
 |
|
|
|
|
|
|
Encyclopedia :
Z :
ZE :
ZET :
Zetta |
|
|
ZettaZetta (symbol Z) is a SI prefix in the SI system of units denoting 1021 or 1 000 000 000 000 000 000 000.Adopted in 1991, it comes from the French sept, meaning seven, because it is equal to 10007. There was a bogus SI prefix of the same value, Hepa, which was informally introduced a few years before the promulgation of Zetta. It apparently came from the Greek ἑπτά, hepta, seven.
See alsoExternal link
|
|
|
This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License. |
|
| © 2008 Chamas Enterprises Inc. |
