Question

- Leonardo Da Vinci ________ from the period of April 15, 1452 to May 2, 1519. Known as one of the greatest legends in fine art, the prodigy of the Italian Renaissance also ________ as a sculptor, architect, musician, anatomist, inventor, engineer and geometer. He _______ a multi-talented personality and a true genius.

The invention of an airplane ________ be traced back to the times of Leonardo Da Vinci. The genius was the first person to explore the option of flight for human beings. He __________an in depth research on the structure and flying mechanism of birds. Thereafter, in 1485, he _________ a machine known as an ornithopter with flapping wings. The model was to be powered by the human body.

A closer look at the study performed by Da Vinci and his evolving designs over the years reveals how his scientific hypothesis metamorphosed. His earlier designs were incredible but seemed too heavy for practical flight. Gradually, insight knowledge of the gliding mechanism of birds made him realize that an imitation of this strategy could possibly work better than a human powered device. The designs of a glider sketched by Leonardo showcase the flier's position in a way that required him to maintain balance by the motion of the lower part of his body. The wings _________ conceived keeping in mind the wings of bats or other large birds. These wings were rigid towards the inside and were movable at their outer edge. This technique was based on the observation that in reality the inner part of the wings of a bird __________more slowly than the outer part. The main _____________ was to be able to sustain rather than to push forward.

____________ the designs of Leonardo Da Vinci were very convincing, there is no proof in history highlighting his attempt to experiment with an operational device. However, the idea of such a human powered mechanical flight device based on the flying technique of birds or bats _____________in the scientific world for many centuries hence forth. It took almost four centuries after Da Vinci’s master plan for any man to venture into this domain successfully.

In 1896, Professor Samuel Langley _______________ two machines of 1.5 horsepower steam engine, which were tested and wrecked in 1903. Finally, the Wright brothers, Orville and Wilbur Wright obtained ___________ fame on December 17, 1903 for making man fly successfully in a machine that was heavier than air and was driven by its own power. During the experiment, one flight _____________ for 30 meters in 12 seconds and another one completed 260 meters in 59 seconds at Kitty Hawk, North Carolina


excelled, can, were, moves, objective, circulated, obtained, sustained, lived, was, performed, designed, Although,
manufactured.
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