Sensory deprivation or perceptual isolation is the deliberate reduction or removal of stimuli from one or more of the senses. Simple devices such as blindfolds or hoods and earmuffs can cut off sight and hearing, while more complex devices can also cut off the sense of smell, touch, taste, thermoception (heat-sense), and 'gravity'.
Leonardo da Vinci (1452~1519), the great Italian artist, architect, and man of science, made the first scientific experiments In the field of aviation. He devoted many years of his life to understanding the mysteries of flight, and he left the world 160 pages of descriptions and sketches of flying machines.
Wilbur Wright, born on 16 April, a famous inventor. Wilbur Wright's background: One of the Wright brothers, who are generally credited with inventing and building the world's first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight on December 17, 1903.