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.
The Wright Brothers were NOT the first to fly a plane-a German pilot beat them to it two years earlier in a flying car, claims leading aviation journal. 1  Gustave Whitehead is believed to have flown his Condor plane in August 1901 - more than two years before the Wright Brothers' infamous flight.iew. comments. The Wright Brothers are famous for flying the world's first successful airplane in 1903 - yet they may have been beaten to the record two years earlier, according to a prestigious aviation journal.