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.
Thanks to a coin toss, Orville was the first brother airborne. The brothers tossed a coin to see who would first test the Wright Flyer on the sands of Kill Devil Hills, North Carolina. Older brother Wilbur won the toss, but his first attempt on December 14, 1903, was unsuccessful and caused minor damage to the aircraft. Three days later, Orville, in coat and tie, lay flat on his stomach on the planeâs lower wing and took the controls.