Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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lib. </
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<
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<
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<
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</
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<
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<
s
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xml:space
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">Porro ſuperfluam me ais operam ſumpſiſſe, cum priores
<
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duas corporum rationes numero exhibui, ex quibus tertia
<
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vobis definienda erat; </
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<
s
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xml:space
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">illas enim autor operis Geometrici, ſi
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credimus, multo antè quàm ego edidiſſem, imo quàm ipſe
<
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editus eſſem, perſpectas habuit aliiſque demonſtravit. </
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<
s
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echoid-s921
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xml:space
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">Quæ-
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ſo curnon explicuit igitur, noſque ea levavit moleſtia? </
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<
s
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xml:space
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">Nam
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certum erat plurimum ad abſolvendam quadraturam, ſi mo-
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do abſolvi poſſet, eorum notitiam conferre debere, planéque
<
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/>
eſſe neceſſariam. </
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>
<
s
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xml:space
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">Sed vobis cuncta perinde nota dici video
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quæ cognoſci poſſe aliquâ ſaltem ratione imaginamini, at-
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que ea quæ liquido comperta fuerint. </
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<
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">Itaque ad propoſ. </
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</
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<
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<
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<
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xml:space
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">me remittis, in qua utramque rationem notam fieri
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aſſeris. </
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<
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xml:space
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">Illa vero non magis ipſas expedit quam propoſitio
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poſtrema ejuſdem libri, rationem quæ ſit inter circulum & </
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<
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quadratum diametri. </
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<
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xml:space
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">Prorsus huic ſimile eſt quod de Para-
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bolica ungula reſpondes. </
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<
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xml:space
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">Videlicet jam à triginta annis ex-
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ploratum habuiſſe autorem tuum, quænam ſit illius ad cy-
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lindrum ſuum proportio. </
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<
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xml:space
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">Equidem ex iis quæ jam tradide-
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rat, erui illam poſſe faſſus ſum; </
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<
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xml:space
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">ipſum vero adhuc cujuſmo-
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di foret neſciviſſe, ſatis evidens argumentum videbatur,
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quod eam non expromeret. </
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<
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xml:space
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">Neque enim credibile, cujus theo-
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rematis gratia duodeviginti propoſitiones elucubraſſet, id
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tanquam ſuperfluum non eſſe adſcripturum, ſi tam nullo ne-
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gotio inveniri poſſe ſperaret. </
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<
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xml:space
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">Parum intererat utrum propo-
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ſitione illud dignatus fuiſſet, (quod noluiſſe eum dicis) an
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corollario tantum. </
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<
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">Sed nec in corollario ratio illa uſpiam ex-
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preſſa eſt. </
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<
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xml:space
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">Nam in eo quod adducis, hoc ſolum legitur,
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methodum traditam eſſe qua ratio ungulæ ad cylindrum quo
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continetur, inveſtigari queat, eamque notam fore, ſi quo-
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rundam inter ſe corporum rationes inventæ fuerint. </
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<
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horum corporum rationes, & </
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<
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">ex iis quæ ſit inter ungulam
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cylindrumque ſuum analogia, lectoribus diſquirenda relin-
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quuntur: </
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<
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<
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">Quare non ſatis ingenue hic
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me diſſimulationis arguis, ubi ipſe contra quam ſentias, ſcri-
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bere videaris.</
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<
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