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.
If your string turns out to be too long, then try 7-1/4 next time. This jig is designed for a longbow. Longbow strings are usually 3 shorter than the bow length, whereas on recurves, it's more like 4 shorter than the bow length. So if you're making the string for a recurve, use 7-1/2 instead of 7. After making a few strings, you'll get a feel for where to measure it. Now here's how I do my twisting.