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Omega (uppercase Ω, lowercase ω) is the 24th and last letter of the Greek alphabet. In the Greek numeric system, it has a value of 800.
#REDIRECT [[Omega (Greek letter)]]
 
==Symbol uppercase Ω==
'''Astronomy'''
*density of the universe, also referred to as the cosmological density parameter. with components of mass density, Ω<sub>M</sub>, and vacuum energy density, Ω<sub>L</sub>.<ref>[http://www4.nau.edu/meteorite/Meteorite/Book-GlossaryO.html] Meteorite Book, Northern Arizona University</ref>
'''Chemistry'''
*designation for the last carbon on the chain in a fatty acid
'''Electricity'''
*ohm: SI unit of electrical resistance
'''Mathematics'''
*Omega constant (Lambert’s W function)<ref>[http://mathworld.wolfram.com/OmegaConstant.html] Wolfram Math World</ref>
*Chaitin’s constant: the probability that a randomly selected valid program string is interpreted by a halting
term<ref>[http://www.cs.cmu.edu/~kw/research/chaitin.html] School of Computer Sciences, Carnegie Mellon University</ref>
*Calculus: a 2-D region
*A theoretical measure of the execution of an algorithm, (e.g. required time or memory) given the problem size ''n'' (e.g. the number of items).<ref>[http://www.nist.gov/dads/HTML/omegaCapital.html] National Institute of Standards and Technology</ref>
'''Meterology'''
*Used to designate vertical motion in the atmosphere<ref>[http://www.srh.noaa.gov/jetstream/append/glossary_o.htm] JetStream – Online school for weather, National Weather Service</ref>
'''Statistics'''
*Sample space
*Set of possible outcomes
'''Literary'''
*End or last thing in a series<ref>[http://www.askoxford.com/concise_oed/omega?view=uk] Ask Oxford</ref>
'''Physics'''
*Solid angle or rate of precession in a gyroscope<ref>[http://mathworld.wolfram.com/SolidAngle.html]Wolfram Math World</ref>
*Omega baryons (particle physics)
*Negatively charged elementary particle with a mass 3270 times the mass of an electron.<ref>[http://www.merriam-webster.com/cgi-bin/dictionary?book=Dictionary&va=omega] Merriam Webster Online</ref>
*''Omega minus b'': a very short-lived unstable meson with mass 1532 times the mass of an electron (aka omega meson)<ref>[http://www.merriam-webster.com/cgi-bin/dictionary?book=Dictionary&va=omega] Merriam Webster Online</ref>
 
==References==
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Latest revision as of 15:20, 19 November 2008

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