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 naming angles.
Recurve bow. A recurve bow is a bow with limbs that curve away from the archer when unstrung. A recurve bow stores more energy and delivers energy more efficiently than the equivalent straight-limbed bow, giving a greater amount of energy and speed to the arrow.
I had the same problem with my string how it was unravelled or was splitting. I just called up my archery supplier to check out my brace height and they said that set my 70 recurve bow to 8.75 to 9.5 inches. So I twisted it to 9.25 inches to have it half way in the brace height range and this was the result.