Paradox of the archer
The paradox of the archer bears this name because, in spite of the undulations of the arrow during its flight, this one reached its target. These undulations come from different the forces applying to the arrow during the shooting. For this reason a Archer must aim with a shift on the side opposed to the arm of cord (that which draws the cord) that the curve of travel of the arrow will correct.
This curve depends on the rigidity of the arrow and the power of the arc. Rigidity or " spine" must be in connection with the arc power for which it is intended: a more powerful arc will need a stiffer arrow and, on the contrary, a less powerful arc will require a more flexible arrow.
Lastly, the rotation of the arrow on its axis induces also a stabilization of its trajectory. The more quickly the arrow rotates, plus its trajectory will be rectilinear and stable.
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