Non-returning boomerangs do not have the light weight and special wing design that causes returning boomerangs to travel back to the thrower, but their curved shape does cause them to fly easily through the air. These are also curved pieces of wood, but they are usually heavier and longer, typically 3 feet (1 meter) or more across. Returning boomerangs evolved out of non-returning boomerangs. Returning boomerangs are not suited for hunting - they are very hard to aim, and actually hitting a target would stop them from returning to the thrower, pretty much defeating the purpose of the design. When thrown correctly, a returning boomerang flies through the air in a circular path and arrives back at its starting point. Most returning boomerangs measure 1 to 2 feet (30 to 60 cm) across, but there are larger and smaller varieties. Traditionally, these are basically two wings connected together in one banana-shaped unit, but you can find a number of different boomerang designs available these days, some with three or more wings. The kind we're all familiar with, returning boomerangs, are specially crafted, lightweight pieces of wood, plastic or other material. When we talk about boomerangs, we usually mean the curved devices that return to you when you throw them, but there are actually two different kinds of boomerangs. Boomeranging is an amazing demonstration of scientific principles as well as a terrific sport you can enjoy all by yourself. We'll also delve a little into the history of boomerangs to see how they came about in the first place. In this article, we'll break down the physical principles that make boomerangs work, see what happens as a boomerang flies through the air and find out the proper way to throw a boomerang so that it comes back to you.
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