Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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DE S*TATICÆ PRAXI*.
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dusad D applicari oporteat utjugum in data theſi permaneat, ſi verò N iſtic
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fuiſſet firmitudinis punctum, hoc eſt, dati corporis gravitatis centrum, quod-
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libet vel minimum pondus, mathematicum videlicet, è D ſuſpenſum iſtud
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latus omnino depreſſerit: </
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">Idem hic evenire intelligas utrumlibet æquiponde-
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rantium radiorum minimo pondere auctum ab æquamento deorſum vergere;
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</
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<
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">qui tamen in aliis nonnullis bilancibus tantulo pondere vix impellerentur.</
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</
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<
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xml:space
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">Sin autem fabrica hæc in iſta aciei tranſverſi axis & </
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>
<
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xml:space
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">retinaculorum confinii
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tam accurata inveftigatione nimium negotii faceſſat, huc tamen omnia quam
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poterit fieri accuratiſſimè dirigantur; </
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>
<
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xml:space
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">Et ſi pauxillum ab iſta perfectione abeſle
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velint, librilis & </
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>
<
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xml:space
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cantor, iecus enim hinc illud incommodi exſtiterit ut cuncta inter librandum
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invertantur; </
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<
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">Imo quod ponderoſius fuerit leviſſimum quandoq́ue videbitur,
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præcipuè ſi axis propter librilis longitudinem horizonti non ſit parallelus,
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omnia ſiquidem eò redeunt unde motus ſumpſerint principium.</
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<
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">Librilis radios à medio axis tranſverſi pari intervallo abeſſe oportere, vel
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hinc patet quod pondera ſuis radiis per I propoſ. </
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ſi radius alter centeſima parte reliquum excedat libram doloſam efficiet, quæ
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enim pondera æquipondia viderentur revera centeſima parte differrent; </
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ſi radii parte quinta & </
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diſcrepantiæ ratio foret eadem quæ 4 ad 100 atque ita deinceps in cæteris.</
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<
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rum momenti afferunt. </
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impari longitudine ut puta dupla, certum eſt unciæ, ſemunciæve, aut </
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