8th century. In 1749 a man by the name of Alexander Wilson, a Scottish scientist, sent out a series of kites with thermometers attached to measure the air temperature at different altitudes. In 1752, Benjamin Franklin used a kite to show that lightning was electricity. In 1804, a man named Sir George Cayley "developed the idea of untethered heavier-than-air flight"(Baker 10). He later developed a kite that carried his servants across the valley. Also, two men by the names of Wilbur and Orville Wright used kites in the testing for a flying machine.
             "Kites are heavier-than-air flying structures controlled by three main forces: lift, gravity, and drag"(Eden 18). Along with lifting the kite up towards the sky, the force of the wind must overcome the resistance of the air to the forward motion of the kite, which is known as drag. "A kite, like every object, has a center of gravity, the point at which all weight appears concentrated and at which it balances. Likewise it can be said to have a center of lift, the point at which all air pressure against the kite is concentrated, and a center of drag, the point on the kite where all resistant forces are concentrated"(Schmidt 5). Bernoulli's principle states, "that when air moves quickly, its pressure decreases, but
             ...