Newton, Isaac
,
Philosophia naturalis principia mathematica
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1713
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ſunt ſumme regulares, & peraguntur in Sectionibus Conicis, nunc
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valde eccentricis, nunc ad Circulorum proxime formam acceden
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tibus; jure quærendum erit, qui fieri poſſit, ut iidem integri con
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ſerventur, nec ab actionibus materiæ occurſantis per tot ſæcula
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quicquam perturbentur. </
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>Sane ſi motus hi fictitii ſunt magis com
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poſiti & difficilius explicantur, quam veri illi motus Planetarum
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& Cometarum; fruſtra mihi videntur in Philoſophiam recipi:
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omnis enim Cauſa debet eſſe Effectu ſuo ſimplicior. </
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<
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>Conceſſa
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Fabularum licentia, affirmaverit aliquis Planetas omnes & Cometas
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circumcingi Atmoſphæris, adinſtar Telluris noſtræ; quæ quidem
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Hypotheſis rationi magis conſentanea videbitur quam Hypothe
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ſis Vorticum. </
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>Affirmaverit deinde has Atmoſphæras, ex natura
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ſua, circa Solem moveri & Sectiones Conicas deſcribere; qui
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ſane motus multo facilius concipi poteſt, quam conſimilis motus
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Vorticum ſe invicem permeantium. </
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>Denique Planetas ipſos &
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Cometas circa Solem deferri ab Atmoſphæris ſuis credendum eſſe
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ſtatuat, & ob repertas motuum cæleſtium cauſas triumphum agat. </
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Quiſquis autem hanc Fabulam rejiciendam eſſe putet, idem & alte
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ram Fabulam rejiciet: nam ovum non eſt ovo ſimilius, quam Hy
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potheſis Atmoſphærarum Hypotheſi Vorticum. </
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>Docuit
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Galilæus,
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lapidis projecti & in Parabola moti deflexio
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nem a curſu rectilineo oriri a Gravitate lapidis in Terram, ab oc
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culta ſcilicet qualitate. </
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>Fieri tamen poteſt ut alius aliquis, naſi
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acutioris, Philoſophus cauſam aliam comminiſcatur. </
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>Finget igi
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tur ille materiam quandam ſubtilem, quæ nec viſu, nec tactu,
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neque ullo ſenſu percipitur, verſari in regionibus quæ proxime
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contingunt Telluris ſuperficiem. </
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>Hanc autem materiam, in di
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verſas plagas, variis & plerumque contrariis motibus ferri, & li
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neas Parabolicas deſcribere contendet. </
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>Deinde vero lapidis de
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flexionem pulchre ſic expediet, & vulgi plauſum merebitur. </
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pis, inquiet, in Fluido illo ſubtili natat; & curſui ejus obſequen
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do, non poteſt non eandem una ſemitam deſcribere. </
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>Fluidum
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vero movetur in lineis Parabolicis; ergo lapidem in Parabola
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moveri neceſſe eſt. </
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>Quis nunc non mirabitur acutiſſimum hujuſce
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Philoſophi ingenium, ex cauſis Mechanicis, materia ſcilicet &
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motu, phænomena Naturæ ad vulgi etiam captum præclare de
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ducentis? </
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>Quis vero non ſubſannabit bonum illum
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Galilæum,
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qui
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magno molimine Mathematico qualitates occultas, e Philoſophia
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feliciter excluſas, denuo revocare ſuſtinuerit? </
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<
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>Sed pudet nugis
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diutius immorari. </
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