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Alpha
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(Redirected from Alpha (letter))
For other uses, see Alpha (disambiguation).
Greek alphabet  

Αα  Alpha  Νν  Nu 
Ββ  Beta  Ξξ  Xi 
Γγ  Gamma  Οο  Omicron 
Δδ  Delta  Ππ  Pi 
Εε  Epsilon  Ρρ  Rho 
Ζζ  Zeta  Σσς  Sigma 
Ηη  Eta  Ττ  Tau 
Θθ  Theta  Υυ  Upsilon 
Ιι  Iota  Φφ  Phi 
Κκ  Kappa  Χχ  Chi 
Λλ  Lambda  Ψψ  Psi 
Μμ  Mu  Ωω  Omega 
Other letters  
Ϝϝ  Digamma  Ⱶⱶ  Heta 
Ϻϻ  San  Ϙϙ  Koppa 
Ϡϡ  Sampi  Ϛϛ  Stigma 
Ϸϸ  Sho  

Alpha (uppercase/lowercase Α α), is the first letter of the Greek alphabet, used to stand for the "a" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 1. Letters that came from it are the Roman A and Cyrillic А.
Alpha is often used in physics and chemistry as a symbol or in the names of things, for example alpha particles (which are two protons and two neutrons bound together into a particle the same as a helium nucleus). The symbol is also used a lot in mathematics in algebra, for example in naming angles, and in statistics, to represent statistical significance level.^{[1]}^{[2]}
Related pages
References
 ↑ "Greek/Hebrew/Latinbased Symbols in Mathematics" (in enUS). 20200320. https://mathvault.ca/hub/highermath/mathsymbols/greekhebrewlatinsymbols/.
 ↑ "Greek alphabet letters & symbols (α,β,γ,δ,ε,...)". https://www.rapidtables.com/math/symbols/greek_alphabet.html.