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.
Galileo (1564 - 1642) is generally remembered for his famous gravity experiment, but he also contributed greatly to the scientific method. In fact, physicists such as Einstein and Hawking proclaimed him as the father of modern science.he Beginning of the History of the Scientific Method. At the time when the two great cultures of Ancient Greece and Ancient Persia were seeking dominance and fighting wars at Thermopylae and Platea, it is easy to forget that these two cultures also had a deep mutual respect, and traded ideas and knowledge.