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He was an American inventor and businessman he developed many devices some of them where the phonograph, the motion picture camera, and the long lasting light bulb.
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She was a polish and naturalized French physicist and chemist she did research on radioactivity.
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He was an Italian inventor and was also an electrical engineer he is known for his long distance radio transmission.
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Einstein developed the theory of relativity, one of the two pillars of modern physics.
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Jonas Salk was an American medical researcher he also discovered and developed the very first polio vaccine.