The best known is the boomerang as a flat curved piece of wood (two wings), but there are also boomerangs with three or more wings. In general, a boomerang light weight, and is not dangerous. But despite losing a boomerang never out of sight.
A boomerang may be left-handed or right-handed. When a boomerang is thrown well, he will be the first piece to go straight, but will then return via a circular orbit. The pitcher must take into consideration the wind; in general, it is only possible to leave a boomerang good return when one throws in at a certain angle against the wind, with a certain force, a certain rotational speed, a certain angle relative to the ground, and a particular riser angle of the web. This can only be learned through practice and properties of all boomerangs differ in these respects again what. Learning to recognize / predict the flight is an important aspect of pitching well. This allows the pitcher can somewhat predict where the landing will be. If necessary (and possible) the pitcher can go running to be ready for the catch.
The amount of wind strongly influences a good pitch. The easiest way is to throw little or no wind. With more wind is, by adjusting the pitch, are also thrown. Above wind force 3 is not advisable to throw yet.