Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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347
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EPISTOLA.
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nobis, circa has propoſitiones & </
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<
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xml:space
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">ſignificationem verbi continere,
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opinio fuit Incomparabili Carteſio, quem ſi minus inſignem
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Geometram quam Algebriſtam fuiſſe arbitraris, parum ex ve-
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ro judicas. </
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>
<
s
xml:id
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xml:space
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">Ejus ad amicum epiſtolæ copia mihi facta eſt, cum
<
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jam diu exetaſis noſtra prodiiſſet, quâ quoniam non tantum id
<
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quod dixi comprobatur, ſed & </
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<
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xml:space
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">tota inſuper ad opus Geometri-
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cum P. </
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<
s
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xml:space
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<
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. </
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<
s
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xml:space
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">Vincentio pertinet, integram hic adſcribere vi-
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ſum eſt. </
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<
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<
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<
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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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">J’Aygardé vos livres un peulong temps, pource que je deſirois
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en vous les renvoyant, vous rendre compte de la Quadrature
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du cercle pretendue, & </
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<
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">j’ avois bien de la peine à me reſoudre de
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feuilleter tout le gros volume qui en traite. </
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<
s
xml:id
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xml:space
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">En fin j’ en ay veu
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quelque choſe & </
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<
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">aſſez ce me ſemble pour pouvoir dire qu’ilne conti-
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ent rien de bon qui ne ſoit facile, & </
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<
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xml:space
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">qu’on ne puſt eſcrire tout en
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une ou deux pages. </
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>
<
s
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xml:space
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">Lereſte n’ eſt qu’un paralogiſme touchant la
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Quadrature du cercle, enveloppé en quantité de propoſitions qui
<
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/>
ne ſervent qu’ à embroüiller la matiere, & </
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>
<
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">ſont tresſimples & </
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<
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facilles pour la pluspart, bien que la façon dont il les traite, les
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face paroiſtre un peu obſcures. </
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<
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xml:space
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">Pour trouver ſon paralogiſme, j’ai
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commencé par la 1134
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page, ou il dit: </
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<
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">Nota autem eſt propor-
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tio ſegmenti L M N K ad ſegmentum E G H F, ce qui eſt faux,
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& </
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<
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">la preuve qu’il en donne eſt fondée ſur la 39
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propoſition en la
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page 1121. </
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<
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xml:space
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">du meſme livre, ou ily a une erreur tresmanifeſte,
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qui conſiſte en ce qu’il veut appliquer à pluſieurs quantitez conjo-
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intes ce qu’il a prouvé auparavant des meſmes quantitez divisées.
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</
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<
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">Carpar exemple, ayant les 4. </
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2, # 4, # 8, # 2, # 8, # 32.
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###### &
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2, # 6, # 18, # 2, # 10, # 50.
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bien qu’il ſoit vray que 8. </
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">en raiſon duoblée de ce que 4.
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</
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<
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">Et que 18. </
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">eſt auſſi à 50. </
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<
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xml:space
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">en raiſon doublée de ce que 6. </
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eſt à 10. </
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<
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it à 32 + 50. </
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<
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<
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">en raiſon double de celle qui eſt entre
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4 + 6. </
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<
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<
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nements ne ſont fondez que ſur cettefaute, & </
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<
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