Marci of Kronland, Johannes Marcus
,
De proportione motus figurarum recti linearum et circuli quadratura ex motu
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1648
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Et quia propiores illi baſi, quæ tangit planum, remotioribus
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ſunt pro baſi; erit minor illorum plaga: ac proinde ad minus
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intervallum reflectunt. </
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>Idem verò contingit ſiue eandem
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habeant gravitatem orbiculi reliqui, ſiue præponderet baſis,
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aut minus ſit gravis. </
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>Nam licet baſis magis ponderoſa ma
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iorem dat plagam; cùm non niſi à maiori impulſu moveatur
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eodem cum minoris gravitatis motu: quia tamen in ordine
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ad motum hanc expendimus;
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; in eadem ratione ſunt mo
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tus reflexi, minor autem huius motus; minorem
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in or
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dine ad ſuum motum dicetur dare & referre plagam. </
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THEOREMA VI.
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Si plures orbiculi ſimul iuncti & æquales percutiant Cylindrum ſoli
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dum; maiorem impulſum recipiunt partes à baſi remotiores.
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>Nam baſis quidem minorem dat plagam per 5 theor: eſt au
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tem orbiculus propior remotioribus pro baſi: erit ergo maior
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illorum plaga, & à maiori plagâ maior
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impulſus. </
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<
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et ratio vectis huc facere videtur. </
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>Nam orbiculus ipſo cy
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lindro utitur pro vecte:
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eò magis, quò plaga fit remoti
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or à baſi: cuius hypomochlium eſt planum, in quo cylindrus
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firmatur. </
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à plagâ in medio aut propè baſim factâ immo
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tus manet: ſi eandem plagam accipiat in ſummo, invertitur.
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inde ratio conſtat, quamobrem partes cylindri ſuperiores
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avertuntur ex illâ plagâ, & celeritate motûs alias antevertunt:
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à baſi enim cum longitudine cylindri continuò accreſcit pla
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ga. E contra verò ſi plaga fiat propè baſim, & infra medium,
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non percuſsâ reliquâ parte cylindri; reſupinato vertice mo
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tum accelerat baſis. </
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>Cùm autem cylindrus alium percutit ſi
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bi æqualem: quia omnes partes æqualiter moventur; eandem </
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