Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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DE C*HALINOTHLIPSI:*
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<
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<
s
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xml:space
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">Alrera cauſa pendet ab equi cervice inflexa, nam hinc eſt quod catellæ in-
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@ermediæ in ſcapo breviore lõgius ab equi pectore diſtent, quam in longiore.
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</
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<
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xml:space
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">ideoque habenæ ſcapi brevioris magis adducendę ſunt ut catellæ intermediæ
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pectus tangant, quam in ſcapo longiore. </
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<
s
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xml:space
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">ideoque etiam cum tangent ſua aſpe-
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ritate moleſtiores erunt.</
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<
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<
s
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xml:space
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">Neceſt quod hic aliquis ſuſpicetur placita hæc cum ſtaticis theorematis
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pugnare, quæ longioribus jugis plus virium tribuebant, hoc eſt, ſi B D libri-
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le fingatur, cujus brevior radius ſit A D, longior, unde & </
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<
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xml:space
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exiſtat, A B. </
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<
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xml:space
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<
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xml:space
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">Nam ſcrupulus iſte facile
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tolletur, ſi in mentem revocemus, quod hic in conſiderationem non veniat
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vis ea, quam eques adducendis ſua manu habenis præſtat (nam ut in brevio-
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re ſcapo ocelli contactum tantundem commoveat, magis allaborandum erit,
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quam in longiore) ſed hoc, quod ſi ſatis intentæ ſint habenæ utri ſcapi ſuo
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preſſu plus aſperitatis moleſtiæ q́ue faceſſant.</
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xml:space
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<
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habent.</
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<
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<
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xml:space
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">Nam habenis tantundem adductis pſellium longiore capitello plus com-
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movetur quam breviore. </
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<
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">diagrammate res illuſtrior fiet. </
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<
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longius, ejuſque ocelli contactus B, A C vero ſit capitellum brevius, ejuſque
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ocelli contactus C, communis utrique hic ſcapus intel-
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ligatur A B. </
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ſcendat in E. </
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">& </
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<
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xml:space
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">ocelli contactus B deſcendatad F per
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peripheriam B F. </
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<
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xml:space
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">Sed ocelli contactus ab C uſque G
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peragrata peripheriá C G minor eſt quam B F; </
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<
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xml:space
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A C ad A B, ſic G C ad B F. </
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<
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xml:space
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B longioris capitelliaffixum, æquali habenarum ductu
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plus movetur, quam ſi ocello C minoris capitelli fixum
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hæreret. </
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<
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xml:space
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">quanto autem pſellrum magis ſurſum commo-
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vetur, eò arctius mento hæret, & </
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dibilam impreſſionem facit validiorem. </
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<
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giora capitella plus aſperitatis habent. </
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<
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xml:space
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">quod ſi quiſpiam
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quęrat cauſam, cur motus initio poſito in D longior ra-
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dius A B, cõtra ſtatica principia vehementiores effectus
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producat, quam brevior A C. </
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<
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annotatiunculam 2 propoſitionis, ubi haud abſimilem
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quæſtionis nodum diſſolvimus.</
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to plus aſperitatis habet.</
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<
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tactus. </
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<
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