For the past ten thousand years, Aborigines in Australia have used a type of weapon called bumerangs to kill the animals and birds they feed on. These weapons are designed to fly in a straight line to the victim, deliver a lethal blow and fall to the ground. The boomerangs that return to the thrower are smaller and lighter, and aborigines do not use them for hunting but only for recreational purposes.
In 1981, the official boomerang launch mark was established in Albury, New South Wales, in the Australian specialty championship: Bob Burwell, a telecommunications engineer, got a boomerang to fly 111 meters before it made the turn back.
For a boomerang to return it is not essential that it has its characteristic arched shape, since there are those with the shape of T, V, X and Y that are also capable of returning with the launcher. For the boomerang to be effective it is enough to splice two pieces of wood in the correct angle with an elastic league.
The shape of boomerang depends on of the wood they're made of. Those who return to the hand of the throwers can measure up to 75 cm and weigh almost 250 grams, and the hunting ones are usually more big and heavy. Boomerangs are sometimes decorated with red, white and yellow pigments.
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