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While there he conducts prism experiments, discovers spectrum of light; works out his system of fluxions, precursor of modern calculus; begins to consider the idea of gravity.
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He held this position for 34 years
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Halley urges him to publish it
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He is plagued by depression and insomnia, and apparently suffers a nervous breakdown.
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He leaves Cambridge and moves to London.
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Newton having developed calculus, and decides in favor of Newton
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