what other discoveries did isaac newton discover?
Reflecting telescope
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 Newton was made President of the Royal Society in 1703 and an associate of the French Académie des Sciences . In his position at the Royal Society , Newton made an enemy of John Flamsteed , the Astronomer Royal , by prematurely publishing Flamsteed 's Historia Coelestis Britannica , which Newton had used in his studies . 

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 In the 1690s , Newton wrote a number of religious tracts dealing with the literal and symbolic interpretation of the Bible . A manuscript Newton sent to John Locke in which he disputed the fidelity of 1 John 5 : 7 and its fidelity to the original manuscripts of the New Testament , remained unpublished until 1785 . 

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 Starting in 1699 , other members of the Royal Society ( of which Newton was a member ) accused Leibniz of plagiarism . The dispute then broke out in full force in 1711 when the Royal Society proclaimed in a study that it was Newton who was the true discoverer and labelled Leibniz a fraud . This study was cast into doubt when it was later found that Newton himself wrote the study 's concluding remarks on Leibniz . Thus began the bitter controversy which marred the lives of both Newton and Leibniz until the latter 's death in 1716 . 

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 Newton 's derivation is found in Section IX of his Principia , specifically Propositions 43 – 45 . His derivations of these Propositions are based largely on geometry . 

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 Newton himself had been rather more modest of his own achievements , famously writing in a letter to Robert Hooke in February 1676 : 
