Fabri, Honoré
,
Tractatus physicus de motu locali
,
1646
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debunt 6. ſecundæ 12. igitur ſumma erit 18. minor vero ſpatio ſcilicet
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21.hinc vides ſuppoſito eodem inſtantium numero ſpatium eſſe ſemper
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æquale, ſiue aſſumantur partes maiores temporis, ſiue minores, v. g. ſup
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poſitis 6.inſtantibus, ex quibus totum ſpatium 21.conſequitur, ſiue aſſu
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mantur tres partes, quarum quælibet conſtet 2. inſtantibus, ſiue duæ,
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quarum quælibet conſtet tribus, ſpatium quod ex illis reſultat, eſt ſem
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per idem ſcilicet 18. aſſumptis verò 8. inſtantibus, & totali ſpatio, quod
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illis reſpondet 36. ſpatium quod ex partibus reſultabit erit 30. ſiue ſint
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duæ partes, quarum quælibet conſtet 4. inſtantibus, ſiue ſint 4. quarum
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quælibet conſtet duobus: </
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<
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">hinc rurſus vides aſſumpto maiori inſtantium
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numero ſpatium verum habere maiorem rationem ad non verum, quàm
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aſſumpto minori inſtantium numero, v.g.aſſumantur 4.inſtantia, ſumma
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ſpatiorum erit 10. ſi verò aſſumantur 2.partes temporis, quarum quæli
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bet duobus inſtantibus reſpondeat; </
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<
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">ſumma ſpatij erit 9.igitur ratio ve
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ri ſpatij ad non verum eſt (10/9). aſſumantur 6. inſtantia ſpatij veri, ſumma
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erit 21.non veri 18. igitur ratio (21/18) ſeu 7/6 quæ maior eſt priori: denique
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aſſumantur 8. inſtantia ſpatij veri, ſumma erit 36. non veri 30 igitur ra
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tio (36/30) ſeu 6/3 quæ maior eſt prioribus, atque ita deinceps. </
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Theorema
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48.
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Datis duabus partibus temporis, & cognito ſpatio quod percurritur in prima,
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matius ſpatium reſpondebit ſecundæ quo vtraque in plures partes minores diui
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detur, ſuppoſita ſemper eadem progreſſione arithmetica in ipſo incremento
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; </
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ſint enim duæ partes temporis ſenſibiles æquales AG. GH. & ſpa
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tium quod percurritur prima parte temporis AG ſit HI; </
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<
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percurretur IO, id eſt, duplum HI; </
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<
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">at verò diuidatur pars temporis
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AG in duas æquales AF, FG, & conſequenter totum tempus AH in 4.
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æquales; </
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<
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">haud dubiè in prima AF percurretur NP ſubtripla HI, & in
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ſecunda FG percurretur PK dupla NP; </
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<
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id
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">igitur in 4. partibus temporis
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AH percurretur ſpatium decuplum PN, ſed HO eſt tantùm nonecupla
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NP; </
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<
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id
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">igitur reſultabit maius ſpatium in 4.partibus temporis, quam in dua
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bus; licèt duæ æquiualeant 4. iuxta progreſſionem arithmeticam. </
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<
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">Similiter AF diuidatur bifariam in E. & tota AH in 8. æquales AE; </
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certè primis 4.percurretur idem ſpatium ML æquale NK & HI; </
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<
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in prima AE percurretur MR. cuius ML ſit decupla; </
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<
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id
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">nam 4. terminis
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reſpondet ſumma 10. ſed 8. terminis id eſt 8.partibus temporis reſpon
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det ſumma; </
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<
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">6. æqualium RM; </
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<
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id
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">ſed HO tripla ML eſt tantum 30.
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æqualium MR; igitur in 8.partibus reſultabit maius ſpatium, quàm in
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4.quæ æquiualent 8. </
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<
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">Ex quibus etiam conſtat quo plures accipientur partes temporis ma
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ius ſpatium reſultare, donec tandem perueniatur ad vltima inſtantia, ex
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quibus reſultat maximum; </
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<
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id
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">& ſi accipias AG partes temporis AG. GH.
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habebitur HO; </
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<
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id
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">ſi verò 4.æquales AF, creſcet ſpatium ſeu ſumma 1/9 HO; </
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ſi autem 8. æquales AE creſcet 1/5 HO; </
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<
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id
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">ſi porrò 16. æquales AD creſ
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cet (22/108) ſi 32. æquales AC creſcet (120/408); ſi 64. æquales AB creſcet (496/1584). </
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