3363 x 5025 px | 28,5 x 42,5 cm | 11,2 x 16,8 inches | 300dpi
Aufnahmedatum:
27. Februar 2007
Weitere Informationen:
discus throw event track and field competition, athlete throws heavy disc — itself ancient sport, 5th century BC Myron statue, Discobolus. ancient pentathlon, 708 BC track field iconic Olympic Games. competition first Olympiad Images throwers figured national regional. Sport game motion is a forehanded sidearm movementspun off the index finger lenticular The discus, the object to be thrown, is a heavy lenticular disc with a diameter of 220 mm (8.66 inches) and a weight of two kilograms (4 lb 7 oz) for the men's event, and a diameter of 181 mm (7.17 inches) and a weight of one kg (2 lb 3 oz) for the women's event. In U.S. high school track and field, boys typically throw a discus weighing 1.616 kg (3 lb 9 oz) and the girls throw the 1 kg (2.2 lb) women's disc. The discus can be thrown starting at age 11 (midget division). Most children throw the 1 kg discus. The discus usually has sides made of rubber, plastic, wood, or metal with a metal rim and a metal core to attain the weight. A discus with more weight in the rim produces greater angular momentum for any given spin rate, and thus more stability, although it is more difficult to throw. A practice discus made of solid rubber is often used in High School; it is cheaper, more durable, and easier to learn to throw (due to its more equal distribution of weight, as opposed to the heavy rim weight of the metal rim/core discus). To make a throw, the competitor starts in a slightly recessed concrete-surfaced circle of 2.5 meters (8 feet 2½ inches) diameter. The thrower typically takes an initial stance facing away from the direction of the throw. He then spins around one and a half times through the circle to build momentum, then releases his throw. The discus must land within a 40-degree or 60-degree arc marked by lines on the landing zone, and the competitor must not exit the circle until the discus has landed, then must wait for the judge to give clearance to exit the ring from the rear half.
