Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
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661 - 687
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PHYSICES ELEMENTA
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ſtantiâ à Sole, & </
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cauſæ ſemper concurrunt ; </
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<
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xml:space
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">quare motus apparentis
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inœqualitas ſenſibilis eſt. </
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<
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tiam integrum circulum Sol percurrere videtur.</
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<
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1.</
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ctio ſphæræ ſtellarum fixarum cum plano Eclipticæ, ad hanc
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ſphæram uſque continuato.</
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<
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">Dividitur hæc via in duodecim partes æquales, quæ ſin-
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gulæ continent 30. </
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">; partes hæ vocantur Signa, & </
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minibus dantur; </
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">Aries ♈, Taurus ♉, Gemini II, Cancer ♋,
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Leo ♌, Virgo ♍, Libra ♎, Scorpius ♏, Sagittarius ♐,
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Capricornus
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, Aquarius ♒, Piſces
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. </
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nomina mutuatæ ſint, ubi de ſtellis fixis acturi ſumus vide-
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bimus.</
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">Diutius in percurrendis ſex ſignis primis bœret Sol, quàm
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in ſex poſterioribus, daturque differentia novem dierum.</
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<
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tamen, in hoc, puncta varia determinanda ſunt, quoddam
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punctum pro principio habendum eſt; </
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câ, eſt primum punctum Arietis; </
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ſequentibus videbimus. </
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circo orbitæ Planetarum, quæ adeò parum mutantur, ut pro
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immutabilibus haberi poſſint , non eundem reſpectu
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puncti ſitum ſervant.</
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<
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2.</
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menſurata, dicitur Solis Longitudo.</
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Eclipticâ menſurantur; </
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jor per corpus concipiatur perpendicularis ad Eclipticam;
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nat corporis longitudinem.</
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<
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3.</
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<
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lius Latitudo. </
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pendicularis, inter corpus & </
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