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 Long Beach Grand Prix in April is the single largest event in Long Beach. It started in 1975 as a Formula 5000 race on the streets of downtown, and became a Formula One race, the United States Grand Prix West, the following year. From 1984 to 2008 it was a Champ Car event, and is now an IndyCar race.