Researcher at the Inria in the LIG laboratory
A talented boleador asks for a volunteer in the audience. The strings touch the hair at each lap. Really impressive. (a churrascaria in Porto Alegre).
"Bolas (from Spanish bola, "ball", also known as boleadoras) are a throwing weapon similar to the surujin made of weights on the ends of interconnected cords, designed to capture animals by entangling their legs. They are most famously used by the South American gauchos, but have been found in excavations of pre-Hispanic settlements, especially in Patagonia, where indigenous peoples used them to catch guanaco and ñandu
Gauchos use boleadoras to capture running cattle or game. Depending on the exact design, the thrower grasps the boleadoras either by one of the weights or by the nexus of the cords. He gives the balls momentum by swinging them and then releases the boleadoras. The weapon is usually used to entangle the animal's legs, but when thrown with enough force might even break the bone.
" (from www.wikipedia.org)