Alpha may refer to:
Greek letter
Alpha is the name given to the first letter of the greek alphabet.Alpha , a letter in the Greek alphabet. α may be used as the symbol for:
Alpha channel, describing transparency and opacity in computer graphics
Angle of attack in aerodynamics
Common-base current gain of a transistor in electronics
The alpha carbon in organic chemistry
The significance level in statistical hypothesis testing
Thermal diffusivity
Coefficient of thermal expansion in thermodynamics
A symbol to denote Direct proportion, in mathematics
In Astronomy (Bayer designation):
The brightest star in a constellation.
The first unit in a sequence.
Physics
Alpha particle, form of particle radiation
Angular acceleration
Fine-structure constant, a fundamental physical constant
H-alpha, or H-α, an emission line created by hydrogen atoms
Place names
Australia
Alpha, Queensland
United States
Alpha, Illinois
Alpha, Kentucky
Alpha, Michigan
Alpha, Minnesota
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