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He improved the telescope.
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Discovered the three laws of gravity
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He discovered the phenomenon of electromagnetism.
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Discovered the theory of electromagnetism.
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Discovered the existence of x-rays.
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Discovered the Gold Foil Experiment
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Developed the general theory of relativity. He discovered the law of the photoelectric effect.
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Contributed to understadning atomic structure and quantum theory.
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Contributed to the develevopment of quantum electrodynamics. He also assisted in the delevopment of the atomic bomb.