Newton, Isaac
,
Philosophia naturalis principia mathematica
,
1713
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atque angulum X (æquationem ſecundam) ad angulum Z (æqua
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tionem maximam ſecundam) ut eſt cubus ſinus anguli T ad cubum
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Radii. </
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>Angulorum T, V, X vel ſummæ T+X+V, ſi angulus
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T recto minor eſt, vel differentiæ T+X-V, ſi is recto major eſt
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rectiſQ.E.D.obus minor, æqualem cape angulum
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BHP
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(motum
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medium æquatum;) &, ſi
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HP
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occurrat Ellipſi in
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P,
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acta
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SP
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ab
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ſcindet aream
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BSP
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tempori proportionalem quamproxime. </
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Praxis ſatis expedita videtur,
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propterea quod angulorum per
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exiguorum V & X (in minutis
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ſecundis, ſi placet, poſitorum)
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figuras duas terſve primas in
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venire ſufficit. </
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curata eſt ad Theoriam Planeta
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rum. </
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>Nam in Orbe vel Martis
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ipſius, cujus Æquatio centri ma
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xima eſt graduum decem, error
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vix ſuperabit minutum unum
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ſecundum. </
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>Invento autem angulo motus medii æquati
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BHP,
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an
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gulus veri motus
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BSP
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& diſtantia
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SP
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in promptu ſunt per
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Wardi
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methodum notiſſimam. </
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DE MOTU
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CORPORUM</
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<
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>Hactenus de Motu corporum in lineis Curvis. </
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<
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teſt ut mobile recta deſcendat vel recta aſcendat, & quæ ad iſtiuſ
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modi Motus ſpectant, pergo jam exponere. </
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