Alpha (uppercase Α, lowercase α; Greek: Άλφα Álpha) is the first letter of the Greek alphabet. In the system of Greek numerals it has a value of 1. It was derived from the Phoenician letter Aleph . Letters that arose from Alpha include the Latin A and the Cyrillic letter А. In English the noun alpha is used as a synonym for "beginning", or "first" (in a series), reflecting its Greek roots.
In Ancient Greek, alpha was pronounced [a] when short and [aː] when long. Where there is ambiguity, long and short alpha are sometimes written with a macron and breve today: Ᾱᾱ, Ᾰᾰ. • ὥρα = ὥρᾱ hōrā Greek pronunciation: [hɔ̌ːraː] "a time" • γλῶσσα = γλῶσσᾰ glôssa Greek pronunciation: [ɡlɔ̂ːssa] "tongue" In Modern Greek, vowel length has been lost, and all instances of alpha represent the short Greek pronunciation: [a]. In the polytonic orthography of Greek, alpha, like other vowel letters, can occur with several diacritic marks: any of three accent symbols (ά, ὰ, ᾶ), and either of two breathing marks (ἁ, ἀ), as well as combinations of these. It can also combine with the iota subscript (ᾳ). Greek grammar In the Attic-Ionic dialect of Ancient Greek, long alpha [aː] fronted to [ɛː] (eta). In Ionic, the shift took place in all positions. In Attic, the shift did not take place after epsilon, iota, and rho (ε, ι, ρ; e, i, r). In Doric and Aeolic, long alpha is preserved in all positions. • Doric, Aeolic, Attic χώρᾱ chṓrā — Ionic χώρη chṓrē, "country" • Doric, Aeolic φᾱ́μᾱ phā́mā — Attic, Ionic φήμη phḗmē, "report" Privative a is the Ancient Greek prefix ἀ- or ἀν- a-, an-, added to words to negate them. It originates from the Proto-Indo-European *n̥- (syllabic nasal) and is cognate with English un-. Copulative a is the Greek prefix ἁ- or ἀ- ha-, a-. It comes from Proto-Indo-European *sm̥.
Math and science
The letter alpha represents various concepts in physics and chemistry, including alpha radiation, angular acceleration, alpha particles, alpha
References:  http:/ / www. merriam-webster. com/ dictionary/ alpha  Herbert Weir Smyth. Greek grammar for colleges. paragraph 30 (http:/ / www. ccel. org/ s/ smyth/ grammar/ html/ smyth_1b_uni. htm#30) and note (http:/ / www. ccel. org/ s/ smyth/ grammar/ html/ smyth_1b_notes. htm#30D).  "Chapter 5: Analysing the Data Part II : Inferential Statistics" (http:/ / www. une. edu. au/ WebStat/ unit_materials/ c5_inferential_statistics/ what_alpha_level. html). Research Methods and Statistics PESS202 Lecture and Commentary Notes. .  alpha (http:/ / www. etymonline. com/ index. php?search=alpha) on the Online Etymology Dictionary  Symposiacs, Book IX, questions II & III On-line text (http:/ / etext. library. adelaide. edu. au/ p/ plutarch/ symposiacs/ chapter9. html#section91) at Adelaide library  Hesiod, in Works and Days (see on Perseus Project (http:/ / www. perseus. tufts. edu/ hopper/ text?doc=Perseus:text:1999. 01. 0132:card=405)), advises the early Greek farmers, "First of all, get a house, then a woman and third, an ox for the plough."  "Character Encodings" (http:/ / www. kreativekorp. com/ charset/ ). . Retrieved 14 January 2013. Article Sources and Contributors 5 Article Sources and Contributors Alpha Source: http://en.wikipedia.org/w/index.php?oldid=535789721 Contributors: 209.249.141.xxx, 334a, 62.253.64.xxx, Aaron Brenneman, Aaron Kauppi, Adam2288, AdjustShift, Aeusoes1, Akanemoto, Alana Smithy, Anaxial, AndreasJS, Anonymous Dissident, ApprenticeFan, Asdofj, Atura, Avochelm, Avs5221, B9 hummingbird hovering, Bart133, Bonechilla, BorgQueen, Bromcq, Calathea, Catgut, ChongDae, Christian List, Codex Sinaiticus, Conversion script, D6, Danny, Davidiad, Delirium, Deucalionite, Dirac1933, Doublepoison, Dpv, Draven5, E Pluribus Anthony, EdC, Egil, El C, Eloquence, Epl18, Erutuon, Freakofnurture, Fresheneesz, Future Perfect at Sunrise, Gaius Cornelius, Galoubet, Grika, Grk1011, Hayabusa future, Henningklevjer, HenryLi, Herbee, HiDrNick, Hriber, Hymyly, Im.a.lumberjack, Jay-Sebastos, Jiy, Jnestorius, JohnCD, JorgeGG, Kaimbridge, Kanjilearner, Karl Naylor, Katieh5584, Kpjas, Kwamikagami, Kwekubo, LachlanA, Lacrimosus, Leszek Jańczuk, Lfh, Lowercase Sigma, MSGJ, Macrakis, Magioladitis, Marco3769, Max Naylor, Me Three, Megapixie, Melsaran, Mernen, Mintleaf, Mzajac, NawlinWiki, Nimic86, Obradovic Goran, Octahedron80, Odysses, Olli, Parakalo, Pharsuderoah00, Plugwash, Postdlf, Qwerty450, Raywil, Rbb l181, Rich Farmbrough, Rocastelo, Rogper, Romanm, Rubbishremover, Shalom Yechiel, Shoessss, Skittleys, Sl, Smsarmad, Stephen C. Carlson, TAIntedCHInese, Tamfang, Tarquin, Tbhotch, Tchoř, Ted Longstaffe, Template namespace initialisation script, Tetraminoe, That Guy, From That Show!, Tible, Til Eulenspiegel, Timwi, TomeHale, Unyoyega, Vanisaac, Verloren, Victoriaedwards, VirtualDelight, Wickey-nl, Wikiuser100, Wiknerd, Woohookitty, Wıkınger, Xvn, Yacht, Zenohockey, 102 anonymous edits Image Sources, Licenses and Contributors Image:phoenician aleph.svg Source: http://en.wikipedia.org/w/index.php?title=File:Phoenician_aleph.svg License: Public Domain Contributors: Ch1902 Image:Memorial Stained Glass, Yeo Hall, Chapel, Royal Military College of Canada 605 Oliver Tiffany & 203 Williiam Bermingham.jpg Source: http://en.wikipedia.org/w/index.php?title=File:Memorial_Stained_Glass,_Yeo_Hall,_Chapel,_Royal_Military_College_of_Canada_605_Oliver_Tiffany_&_203_Williiam_Bermingham.jpg License: Creative Commons Attribution-Sharealike 3.0 Contributors: User:Victoriaedwards License Creative Commons Attribution-Share Alike 3.0 Unported //creativecommons.org/licenses/by-sa/3.0/