Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670
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              Proponitur
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                <expan abbr="pulcherrimũ">pulcherrimum</expan>
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                <expan abbr="argumẽtum">argumentum</expan>
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              pro attracti­
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              one.</s>
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              Cap. 6. non
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              dari attracti­
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              onem.</s>
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              Cap. 6. non
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              dari attracti­
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              onem.</s>
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              PROP. CXXXIII.
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              Necesſitate mechanica in tubo pneumatico requiritur maior
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              vis ad trahendum embolum cum adhærente aqua ad
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              altitudinem maiorem, quàm ad minorem ſe­
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              cundùm
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              quam habent aquæ
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              ſubleuatæ pondera, vel mo­
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              menta.
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              <s id="s.001463">VT verò huic difficultati perſpicuè ſatisfacia­
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              mus, ſupponamus in puteo, cuius ſuperficies
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              aquea BC, demergi tubum pneumaticum RB, qui
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              facilitatis gratia continuari intelligatur cum ſip ho­
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              ne inuerſo BIKD; intelligatur que libra radiorum æ­
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              qualium GH, cuius centrum N, & vtrinque pendeant
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              ab extremitatibus æqualia
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              E, & F, & hæc contingant
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              aquæ BC, itaut ambo grauia F, & E
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              comprimant, impellantque aquam
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              ipſam deorsùm, E
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              immedia­
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              tè, F verò mediante embolo QB, ha­
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              beantque figuram cylindricam, &
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              ad modum emboli intra canales ſi­
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              phonis ſtrictè, & arctè moueri
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              ,
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              ac deorsùm poſſint, & ſupponamus
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              embolum QB grauitate carere; ad­
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              ueniat poſtea externa vis, quæ ſuſtentet pondus F ip­
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              ſumque ſursùm impellat, hęc profectò non debet eſſe
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              æqualis integro ponderi vaſto ipſius F, proptereą </s>
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