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.
Tesla was a Serbian engineer and inventor who is often described as the most important scientist and inventor of the modern age, a man who âshed light over the face of Earthâ. He is best known for many revolutionary contributions in the field of electricity and magnetism in the late 19th and early 20th centuries.