Zetta-

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Short description: Decimal unit prefix

Zetta (unit symbol prefix Z) is a decimal unit prefix in the metric system denoting a factor of 1021 or 1000000000000000000000. The prefix was added as an SI prefix to the International System of Units (SI) in 1991.

Zetta is derived from the Latin numeral septem 'seven', and represents 10007.[1]

A prefix of the same value, hepta, derived from the Ancient Greek ἑπτά (hepta) 'seven', was informally introduced a few years before the promulgation of zetta, but never received official sanction and is considered obsolete.[citation needed]

Examples:

Prefix Base 10 Decimal English word Adoption[nb 1]
Name Symbol Short scale Long scale
yotta Y  1024 1000000000000000000000000  septillion  quadrillion 1991
zetta Z  1021 1000000000000000000000  sextillion  trilliard 1991
exa E  1018 1000000000000000000  quintillion  trillion 1975
peta P  1015 1000000000000000  quadrillion  billiard 1975
tera T  1012 1000000000000  trillion  billion 1960
giga G  109 1000000000  billion  milliard 1960
mega M  106 1000000  million 1873
kilo k  103 1000  thousand 1795
hecto h  102 100  hundred 1795
deca da  101 10  ten 1795
 100 1  one –
deci d  10−1 0.1  tenth 1795
centi c  10−2 0.01  hundredth 1795
milli m  10−3 0.001  thousandth 1795
micro μ  10−6 0.000001  millionth 1873
nano n  10−9 0.000000001  billionth  milliardth 1960
pico p  10−12 0.000000000001  trillionth  billionth 1960
femto f  10−15 0.000000000000001  quadrillionth  billiardth 1964
atto a  10−18 0.000000000000000001  quintillionth  trillionth 1964
zepto z  10−21 0.000000000000000000001  sextillionth  trilliardth 1991
yocto y  10−24  0.000000000000000000000001  septillionth  quadrillionth 1991
  1. ↑ Prefixes adopted before 1960 already existed before SI. 1873 was the introduction of the CGS system.

Zetta-joules

1018 to 1023

1021 Zetta- (ZJ) 6.9×1021 J Estimated energy contained in the world's natural gas reserves as of 2010[7][8]
7.9×1021 J Estimated energy contained in the world's petroleum reserves as of 2010[7][9]

See also

References

  1. ↑ "Resolution 4 of the 19th CGPM (1991)". https://www.bipm.org/en/committees/cg/cgpm/19-1991/resolution-4. 
  2. ↑ Williams, David R. (December 16, 2016), Earth Fact Sheet, NASA Goddard Space Flight Center, https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html, retrieved 2018-01-21. 
  3. ↑ Qadri, Syed; Erra, Ketsia (2001). "Volume of earth's oceans". in Elert, Glenn. https://hypertextbook.com/facts/2001/SyedQadri.shtml. 
  4. ↑ "Ocean Heat Content | NASA Global Climate Change". https://climate.nasa.gov/vital-signs/ocean-heat/?fbclid=IwAR1z0a6pkkoPrpZn-6u4HC_UDI3wOyrDRJW0DZguQg2Oyf-bsJLGS0gEdVE. 
  5. ↑ "CODATA Value: Avogadro constant". http://physics.nist.gov/cgi-bin/cuu/Value?na. 
  6. ↑ Richard Wray (2009-05-18). "Internet data heads for 500bn gigabytes". The Guardian. https://www.theguardian.com/business/2009/may/18/digital-content-expansion. 
  7. ↑ 7.0 7.1 "Statistical Review of World Energy 2011". BP. http://www.bp.com/assets/bp_internet/globalbp/globalbp_uk_english/reports_and_publications/statistical_energy_review_2011/STAGING/local_assets/pdf/statistical_review_of_world_energy_full_report_2011.pdf. 
  8. ↑ Calculated: "6608.9 trillion cubic feet" => 6608.9×103 billion cubic feet × 0.025 million tonnes of oil equivalent/billion cubic feet × 1×106 tonnes of oil equivalent/million tonnes of oil equivalent × 42×109 J/tonne of oil equivalent = 6.9×1021 J
  9. ↑ Calculated: "188.8 thousand million tonnes" => 188.8×109 tonnes of oil × 42×109 J/tonne of oil = 7.9×1021 J

External links




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