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Home > Dictionary of Science Quotations > Scientist Names Index D > Abraham DeMoivre Quotes

Abraham DeMoivre
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Science Quotes by Abraham DeMoivre (1 quote)

In 1684 Dr Halley came to visit him at Cambridge, after they had been some time together, the Dr asked him what he thought the Curve would be that would be described by the Planets supposing the force of attraction towards the Sun to be reciprocal to the square of their distance from it. Sr Isaac replied immediately that it would be an Ellipsis, the Doctor struck with joy & amazement asked him how he knew it, why saith he I have calculated it, whereupon Dr Halley asked him for his calculation without any farther delay. Sr Isaac looked among his papers but could not find it, but he promised him to renew it, & then to send it him.
[Recollecting Newton's account of the meeting after which Halley prompted Newton to write The Principia. When asking Newton this question, Halley was aware, without revealing it to Newton that Robert Hooke had made this hypothesis of plantary motion a decade earlier.]
— Abraham DeMoivre
Quoted in Richard Westfall, Never at Rest: A Biography of Isaac Newton (1980), 403.
Science quotes on:  |  Amazement (7)  |  Attraction (19)  |  Calculation (41)  |  Curve (9)  |  Distance (26)  |  Ellipse (3)  |  Force (75)  |  Gravity (59)  |  Edmond Halley (5)  |  Robert Hooke (19)  |  Joy (25)  |  Sir Isaac Newton (176)  |  Orbit (36)  |  Paper (25)  |  Planet (84)  |  Promise (13)  |  Reciprocal (3)  |  Search (40)  |  Square (4)  |  Sun (115)


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