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But thanks to the later account of aNewton confidant, Abraham DeMoivre, we do have arecord of one of science's most historic encounters: 1684t^8g T Neg {vb[r0NcgN[ȓ_0RNHN.^R bNSsKm0FO/f YNNMO[rv[S--N/ObU" h[OTegQvN{S bNMb gNN{ gsQyf[LuN!kg gSSaINvOvU_ In 1684 Dr Halley came to visit at Cambridge (and)after they had some time together the Drasked him what he thought the curve would be thatwould be described by the Planets supposing the force of attraction toward the Sun to bereciprocal to the square of their distance from it. 1684t^ TZSXegQRehb0NN(WNw_NNO?QNT ZSXN /f*Y3v_RNLfy*Y3ݍyvs^ebSk N:NLfЏLvf~O/fNHN7hv0 This was a reference to a piece of mathematics known as the inverse square law, which Halleywas convinced lay at the heart of the explanation, though he wasn't sure exactly how. ُ̑c0Rv/fN*Npef[ TSs^eSk_0TZWO ُ/fʑvsQ. }6qN[vQ-NveYYl gbc0 Sr Isaac replied immediately that it would be an (ellipse). 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