Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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DE CIRCULI MAGNIT. INVENTA.
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plæ ſubtenſæ & </
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<
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xml:space
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compoſita ad triplam ſeſquitertiam ſeu {10/3} utriuſque ſimul, ſi-
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nus, ſubtenſæque, eandem habeat ſubtenſæ ſupra ſinum exceſ-
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ſus ad aliam quandam; </
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arcu minorem.</
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<
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xml:space
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horum eſt 261 {1/3}. </
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<
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xml:space
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quartus proportionalis. </
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<
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xml:space
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triplæ A M & </
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<
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vero major. </
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<
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xml:space
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vero minor. </
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<
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vero min. </
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<
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</
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<
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xml:space
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<
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<
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fiunt 104711 {1/2} minores arcu A B. </
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628269 minus erit circumferentiâ totâ. </
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majores inventæ ſunt arcu A B, earum ſexcuplum 628362
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circumferentiâ majus erit. </
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trum ratio minor eſt quam 628362, major autem quam 628269
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ad 200000. </
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<
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314135 ad 100000. </
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<
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xml:space
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triplam ſeſquiſeptimam, & </
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<
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Longomontani error per hæc refutatur, qui ſcripſit peri-
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pheriam majorem eſſe partibus 314185 qualium rad. </
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<
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<
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100000.</
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<
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miſſis lateris quadrati circulo inſcripti, partium 7071068,
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non unâ minus, qualium radius D B 10000000. </
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latus octanguli partium 7653668 non unâ majus. </
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tis ad ſimilitudinem præcedentium invenietur primus minor
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terminus longitudinis arcus A B 7847868. </
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terminus 7854066. </
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<
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curatior 7853885. </
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<
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rationem minorem haberi quam 31416 {1/3}, majorem autem quam
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31415 ad 10000.</
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<
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