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.
Diamond Archery. Diamond compound bows are made by the BowTech Archery Company. The bows that are made under the Diamond label are the single cam line of bows providing a great deal of adjustability in the draw length as well as smooth timing and a nice fluid draw across all of the bows. They do this by means of the solocam that powers each bow.