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.
In 1928, Melville Marks Robinson of Canada was asked to organise the first British Empire Games; these were held in 1930, in Hamilton, Ontario, and women competed in the swimming events only. From 1934, women also competed in some athletics events.he games were revived in 1950 and underwent a name change four years later with the first British Empire and Commonwealth Games in 1954. Over 1,000 athletes participated in the 1958 Games as over thirty teams took part for the first time.