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.
Longbow vs Recurve Bow. For those who do not know, Longbow and Recurve are the names or rather terms used to refer to two different types of bows that are being used today in archery competitions, as well as hunting game.ecurve is a type of bow that is a later invention in the history of mankind though excavations have revealed that these bows were being used by human beings even 2000 years ago. Recurve bow has limbs that are curved inwards at the end making it look very different from the longbow.