Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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vmbra, comparatáque cum circulo ſpeciem Solis citra
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teleſcopium in obſcura ſcena referente) deprehenſus,
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inquam, eſt triente minuti non maior; adeò vt cùm
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eſſe apparet minutorum trium (quo tempore deberet
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etiam aliquantò minor videri, quàm dum præcisè in
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perigeio verſatur) diſcus eius octogies ſemel, quàm
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reuerâ ſit, amplificarior appareat. </
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<
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">Fidem quoque
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faciũt
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Iupiter, & Mars: qui cùm Acronychi illam Veneris
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æmulentur, obſeruati ſunt tamen à me ex
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comparatione cum diametro Lunæ vix diametro eſſe
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vnius minuti. </
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<
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">At inſtabis, hoc
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decrementũ
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<
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per-exiguũ
">per-exiguum</
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omninò eſſe reſpectu immanis illius, quod affingitur
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ſtellis Fixis. </
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<
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">Sed nempeid fieri videtur, quòd lux Pla
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netarum mutuatitia ſit, & ab illorum ſuperficiebus de
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biliſſima reddita, ob diſtractos Solareis radios (quippe
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quatenus ſuperficies inæquabiliſſimæ ſunt, & facies
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habent aliò, alióque variè diuergenteis, vt de Luna
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quidem manifeſtum eſt, & coniicere de cæteris licet)
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at ex oppoſito lux Fixarum videtur natiua, ac propria,
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& Solaris inſtar, vt puriſſima, ita viuidiſſima; adeò vt ab
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exiguo diſco (longè minore ſcilicet, quàm ſit Planeta
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ris) procedens, tum fortiùs moueat oculum, tum cir
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cumradiationem vberiorem pariat: tum apparentem
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proptereà diſcum amplificatiorem exhibeat. </
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<
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">Argu
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mento autem eſſe poteſt, primùm continens illa ſcin
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tillatio, qua radii Fixarum excurrunt, & quam Ariſto
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teles quoque ex motu non Stellæ, ſed oculi eſſe conten
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dit: ac deinde experimentum factum teleſcopio, quod
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cætera cùm amplificet, Stellas tamen Fixas imminuit,
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ob ipſam nempe reſectionem radiorum excurrentium: </
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