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.
Ancient Olympic Events. At the ancient Olympics, unlike the modern Games, there were very few events. All events were held at the Olympia Stadium in Greece. Only men competed in the Ancient Olympics, and they competed in the nude. Running: There were 4 types of races at Olympia. 2  The oldest event is the stadion, in which the runners sprinted over the distance of 1 stade (192 m), which is the length of the ancient stadium in Olympic.