Fabri, Honoré
,
Dialogi physici in quibus de motu terrae disputatur
,
1665
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dum ſupra Horizontem; errorem eſſe dico; quia Luna exiſtente in maxi
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mâ declinatione Auſtrali, arcus illius diuinus ab Ortivo puncto Horizon
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tis ad Meridianum, vix eſt 60. graduum; igitur ſi detrahantur 50. ſuper
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ſunt 30. quos dum Luna decurrit, duabus ſcilicet horis Æquinoctialibus
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& 4. minutis, durat æſtus; quod apertè falſum eſſe conſtat; tamdiu re
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fluxus duraret. </
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<
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id
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">Prætereà, æſtus, qui fieret poſt Occaſum Lunæ, longè
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major eſſet priore; nempè arcus illius paralleli ſub Horizonte, longè ma
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jor eſt alio; quem Luna ſupra Horizontem excurrit,
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cuncta hæc experi
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mentis repugnant. </
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<
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">Dixi ſuprà, per ſe, cùm per accidens fieri poſſit, vt tem
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pora fluxus & refluxus inæqualia ſint. </
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Antim.
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<
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s.001626
"> Ex præmiſſis principiis hoc manifeſtè deducitur; nempè ſin
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gulis pænè momentis, mutatur in globo punctum, ſeu Polus maximæ ele
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vationis, ac proinde centrum circulorum & arcuum preſſionis, quorum
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cum diverſa ſit ratio & proportio, propter varios continentis & Maris
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tractus, in ſuperficie globi, ſine certâ lege diſtinctos, inde neceſſariò ſe
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quitur diverſa vis preſſionis, diverſa impreſſio, diverſa appulſus, vel illa
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pſus linea: quod vt meliùs intelligas fige pedem circini ad Occiduum
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Guineæ Promontorium, non procul ab Oſtio Nigri, ductíſque innumeris
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circulis ex illo centro, concentricis & parallelis, diſtingue arcus vtiles ab
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inutilibus, ſenſimque promoto versùs Ortum illo centro, vſque ad 60.
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gradus, ſi vlteriùs illud promoveas, vſque ad 90. circuli preſſionis
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maxima ex parte, vel continenti Africæ, Europæ, Aſiæ vel Indico Ocea
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no incumbent, ac proinde inutiles erunt reſpectu prædicti loci: quid mi
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rum igitur, ſi 4. dumtaxat horis in eo æſtus aſſurgat, deprimatur verò plu
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ribus? </
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<
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id
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">Nam promoto versùs Oceanum centro, diverſa eſt circulorum preſ
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ſionis ratio. </
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<
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id
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">Aliquid ſimile obſervabis, fixo circini pede ad litus Cam
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baiæ; tanquam in centro: accedit, quòd ex multis capitibus prædicta
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æſtuum inæqualitas inducitur; Primò, per planum magis inclinatum, lon
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giùs excurrit & velociùs, licèt plus temporis ponat in decurrendo magis
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inclinato, cuncta hæc ex doctrina motuum perſpicua ſunt; tantumdem
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temporis aqua ponit in deſcenſu per planum inclinatum., quantum in
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aſcenſu. </
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<
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id
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s.001629
">Secundò, Si poſt quàm aqua regredi cœpit, nova quædam fiat
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æſtus reflexio, versùs fluminis fauces, vel ſi aqua libero quidem aditu ſu
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beat, ſed exitu difficiliore, tunc acceſſus breviore tempore fiet quàm re
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ceſſus. </
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<
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id
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">Tertiò, Si nova reflexio accedat, antequam aqua regredi incipiat,
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vel agger quidam appoſitus ad fauces ſinus, aut fluminis primam vim ac
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ceſſus retundat, vt videre eſt ad fauces Sequanæ & Garumnæ, receſſus bre
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viore tempore fiet quàm acceſſus. </
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<
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id
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">Quartò, Pro diverſo æſtus ad oram ap
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pulſu, vel illapſu, longiùs per alveum fluviorum vel minùs longè aqua ex
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currit; item pro diverſa alvei inclinatione; hinc facilè crediderim, alveum
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illorum fluminum, in quibus ad aliquot centena milliaria æſtus excurrit,
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eſſe valde inclinatum Quintò, Dicam ampliùs, ratione ejuſdem loci, non
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modò æſtum altiùs aut minùs altè attolli, verùm eſſe aliquando acceſſum
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majorem, aliàs minorem eſſe poſſe; quia mutatur ſingulis diebus centrum
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circulorum preſſionis, etiam reſpectu ejuſdem loci; item aliquando ac-</
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