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.
The NCAA National Championship Races for men meet began in 1938. The first NCAA Womenâs National Championship Race occurred in 1981. Cross country was in the Olympic Games during the early 1900âs, but was dropped because it isnât a traditional summer game, compared to Track & Field.n the state of Wisconsin, where I coach, the girls high school race is four kilometers (about 2 1/2 miles) and the boys race is five kilometers (just over 3 miles). At the collegiate level the races in the U. S. range from five kilometers up to 10 kilometers. Cross country began in England in the early 1800âs.