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.
The top and bottom parts are called âlimbsâ which are made of wood, fiberglass, carbon, and other materials. Your bow gets its power from the unique curve at the limb tips, a design first developed by Egyptian archers thousands of years ago. Parts of a recurve bow. This diagram will show you the different parts of a modern takedown recurve bow.