The Alpha symbol, denoted as α (lowercase) and Α (uppercase), originates from the Greek alphabet where it is the first letter. Over time, it has been adopted for specific uses in various academic and scientific fields. The symbol's history is deeply rooted in ancient Greek culture and has evolved to serve numerous roles in modern disciplines.

The 'α' is a letter of the Greek alphabet. In mathematics, physics, and engineering, it is often used to denote an angle, a coefficient of thermal expansion, an alpha particle, among other uses.

In Unicode, the Alpha text symbol is the character at code point U+03B1. Its HTML code is α and you can type it on your keyboard by pressing Alt + 945 (in MS Word Only) or Alt + 224 (Outside MS Word).