Sinus tachycardia (often referred to as sinus tach) is a rhythm which is formed by the electrical impulse originating in the SA node in the normal manner. However, the rate is faster than normal. The normal heart rate range is 50-100 beats per minute in adults. The rate in the example above is 150 beats per minute.
Wright Flyer. The Wright Flyer (often retrospectively referred to as Flyer I or 1903 Flyer) was the first successful heavier-than-air powered aircraft. It was designed and built by the Wright brothers. They flew it four times on December 17, 1903, near Kill Devil Hills, about four miles south of Kitty Hawk, North Carolina, US. Today, the airplane is exhibited in the National Air and Space Museum in Washington D.C.
Wright Brothers. Aviation was really born on the sand dunes at Kitty Hawk, N.C., on Dec. 17, 1903. On that day Orville Wright crawled between the wings of the plane he and his brother Wilbur had built, opened the throttle of their homemade 12-horsepower engine, and took to the air. He covered 120 feet in 12 seconds. In a fourth attempt that day, Wilbur stayed up 59 seconds and covered 852 feet. These were the first controlled, sustained flights in a power-driven airplane. More on the Wright Brothers and the early days of flight. Charles Lindbergh. Lindbergh made the world's first nonstop solo flight across the Atlantic. Early on May 20, 1927, he took off in The Spirit of St. Louis, traveling 3,610 miles from Long Island, N.Y., to Paris, France.