The above description is the basic idea of what is going on with the Yagi-Uda antenna. Yagi antenna design is done most often via measurements, and sometimes computer simulations. For instance, let's look at a two-element Yagi antenna (1 reflector, 1 feed element, 0 directors).
Though there are no detailed records of when the sport of track and field began, experts say that track and field history can be traced back to 776 B.C. Track and Field History Experts say that track and field history can be traced back to 776 B.C when a cook named Koroibos, from Elis, won a race that was run over 600 feet distance. It is believed that this was the only athletic event for the initial 13 Olympic Games.
Short track speed skating is a sport that is contested at the Winter Olympic Games. The first Winter Olympics, held in 1924, included speed skating, but the first official short track speed skating events were not held until the 1992 Winter Olympics in Albertville, France. Before 1992, short track speed skating events were held at the 1988 Winter Olympics as a demonstration sport. At those games, events for both men and women were held in five disciplines: 500 metre, 1000 metre, 1500 metre, 3000 metre and the relay (3000 metres for women, 5000 metres for men).