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.
Determine the length of the bowstring. For a recurve bow, the string should be 3 1/2 inches shorter than the full length of your bow. The string length for a compound bow should be listed in the literature from the manufacturer, or it may be found written on one of the bow limbs. Calculate the number of strands in the string.