Gassendi, Pierre
,
De motu impresso a motore translato epistulae duae
,
1642
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[Figure 1]
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[Figure 2]
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[Figure 3]
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[Figure 4]
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[Figure 5]
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[Figure 6]
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[Figure 7]
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[Figure 8]
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[Figure 9]
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[Figure 10]
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[Figure 11]
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[Figure 12]
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cum qua oculus noſter transferatur. </
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<
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memorata ſunto. </
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<
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">VI. </
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">Redeo ad experimenta, ac illa potiſſimùm,
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quæ peracta ſunt circa malum: quippe ea eiuſmodi
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ſunt, ex quibus, quantùm fieri poteſt, inueſtigare
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liceat, niſi germanam, at qualemcúmque motus non
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ſolùm proiectorij, ſed etiam naturalis cauſam. </
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<
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">Nem
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pe viſum ſemper mirabile eſt, cur lapis ſpontis ſuæ
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factus, tum per aërem decidat, naturali impetu; tum
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in principio tardius, in fine velociùs prorumpat:
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idemque violenter adactus, tum impreſſo impetu ſur
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sùm efferatur, tum in principio velociùs, & in fine
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tardius emergat. </
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<
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">Cæterùm, duo quædam præmit
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tenda ſunt, quæ inter alia benè multa magno Galileo
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debentur. </
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<
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">Vnum; corpus ſuapte decidens motu ea
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ratione accelerari, vt temporibus æqualibus maiora
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ſemper ſpatia peruadat, iuxta proportionem, quàm
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habent numeri impares inter ſe, initio ſumpto ab vni
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tate. </
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<
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">Hoc eſt; ſi lapis ex. </
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<
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">gr. è præcelſa turri dimiſſus
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intra vnum arteriæ pulſum vnam orgyiam decidat,
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fore vt intra ſecundum decidat treis, intra tertium
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quinque, intra quartum ſeptem, intra quintum no
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uem. </
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<
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">Et quia aggregando, vt in fine primi pulſus
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peracta eſt vna orgyia, ita in fine ſecundi peractæ
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ſunt quatuor, in fine tertij nouem, in fine quarti ſex
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decim, in fine quinti viginti-quinque, qui numeri
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quadrati ſunt, vt Arithmetici appellant; heic fieri, vt
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ſpatia quibuſcúm que temporibus peracta, ſint inter ſe
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in duplicata ratione ſuorum
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(nempe vt eorun
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dem temporum quadrata) veluti Geometræ loquun-</
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