I was recently sat next to the engine an airbus a3-19, i believe it was.
On the underside of the wing there are the three 'cones' (they are cone shaped aerodynamic things). Trailing off the edge of these were little wires that to my eyes seemed to move from time to time - i figured to show the wind direction, but all three were pointing in different directions. The 'cones' are orange in this picture, but are rather hard to see:
http://coppermine.luchtzak.be/albums...l_IMG_2923.jpg
What are these and why are so many of them along the wings of these planes (there were 5 on the wing 'tip' that is perpindicular to the wings).
Sorry for th enone too technical descriptions.