Gassendi, Pierre
,
De motu impresso a motore translato epistulae duae
,
1642
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vides, non negatur quidem, quin mutatio aliqua fiat;
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quin verus quaſi polus habendus ſit ipſum centrum
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circuli, in quod terminari concipitur axis æquatoris
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magni orbis per medium Solem tranſiens; quin pun
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ctum terminans axem Terræ diſtet ab eo ſemper to
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ta ſemidiametro, & nunc quidem in vnam partem,
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nunc in aliam: ſed negatur tamen quicquid illud eſt,
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inducere ſpectantibus obſeruabilem varietatem. </
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que morari debet
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Quartò
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quòd nulla videatur eſſe
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poſſe inter dies, nocteiſque inæqualitas, nullaque
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proinde æſtatis, hiemiſque viciſſitudo; quaſi trans
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lata per Zodiacum Terra perinde ſemper à Sole di
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ſtet, eodemque modo eandem ſemper illi obuertat
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faciem. </
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<
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">Siquidem expoſita axis in paralleliſmo con
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tinentia obſtat, ne ipſe Terræ æquator cum Zodia
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co congruat, ſiue in eodem plano, & abſque interſe
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ctione ſit, vt contingeret, ſi axis Terræ parallelus eſſet
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axi Zodiaci, non verò æquatoris; quo ſanè caſu non
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foret dierum, noctumque inæqualitas, ſed conſtans
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vbique foret æquinoctium; perinde que eſſet, ac ſi Ter
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ra in centro quieſcente, Sol ad Tropicos non defle
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cteret, ſed in æquatore perpetuò circumduceretur;
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vnde neque vllus foret æquator præter Zodiacum,
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neque vlli forent poli præter polos Zodiaci, pari
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modo concipiendos, quo de cæteris dictum eſt. </
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<
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paralieliſmus verò ille efficiat, vt æquator Terræ ſe
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cet continenter Zodiacum, & maneat conſtanter pa
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ralleius æquatori magni orbis; heinc fit, vt nobis v.
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g. qui ad boream ſumus, dum Terra in Cancro eſt,
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obſtet gibbus Terræ, ne Solem in centro tam aper-</
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