Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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xlink:href
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dit in aqua; aut hydrargyro motu ſpontaneo, nempè
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ab intrinſeca virtute motiua, quæ vocatur leuitas,
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igitur neceſsè eſt vt in
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abbr
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aſcẽſu
">aſcenſu</
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penetret corpora flui
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da intermedia; atque eorum tenacitatem, & denſi
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tatem ſuperet, imò fluidum è ſuo loco expellat, vt
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via, & tranſitus paretur, qua ſursùm aſcendere, &
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perduci poſſit, & quia hydrargyrum magis conſti
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patum, denſum, & graue eſt,
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expan
abbr
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quã
">quam</
expan
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aqua, igitur quod
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libet corpus leue aere repletum, aut aeris naturam̨
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participans, vt lignum, & cera, (quæ ex aduerſario
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rum ſententia mouentur ab intrinſeca virtute leui
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tatis) neceſsè eſt vt maiorem reſiſtentiam
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expan
abbr
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offendãt
">offendant</
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in tranſitu per hydragyrum, à cuius tenacitate, den
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ſitate, & pondere gradus impetus eius neceſſariò re
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tunditur retardaturque multò magis, quàm in
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abbr
="
aſcẽ-ſu
">aſcen
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ſu</
expan
>
per aquam contingit, quæ cùm magis rara, & ce
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dens ſit, minùs debilitat retardatque eamdem eius
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vim motiuam, quaproptèr motus aſcenſus ligni, vel
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ceræ per hydrargyrum multò magis retardabitur,
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quàm ille, qui per aquam fit; quia verò hoc eſt fal
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ſum, & contra ſenſus euidentiam, multò enim velo
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ciòr eſt motus ligni, vel ceræ factus per
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expan
abbr
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hydrargyrũ
">hydrargyrum</
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,
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<
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quã
">quam</
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per
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aquã
">aquam</
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;
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expan
abbr
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nõ
">non</
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igitur
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abbr
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verũ
">verum</
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eſt ab intrinſeco, & natu
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rali principio ſursùm moueri, & proindè cauſa aſcen
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ſus non erit leuitas poſitiua, ideoque nullum vſum̨
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habebit in natura, nec propterea exiſtet vlla leuitas. </
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