Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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eam impelleret, proindeque deorſum conuerti debe
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ret ab A verſus G cum à nullo retinaculo impediatur,
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igitur ſemper reuolui poſſet tympanum ab A verſus
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G quia ſemper perſeueraret eadem cauſa vertiginis
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ſcilicet perpetuò conſeruaretur pendulum CD in ſitu
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horizontali, & ideò ſemper premeret & calcaret tym
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pani ſuperficiem AG; quapropter tali artificio con
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ſequi poſſe videtur motus perpetuus prædicti tym
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pani. </
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Cap. 2. de
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momentis
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grauium in
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fluido inna
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tantium</
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Cap. 2. dę
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momentis
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grauium in
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fluido inna
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tantium</
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Cap. 2. dę
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momentis
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grauium in
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fluido inna
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tantium</
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<
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">Hoc, vt dixi, tantam veriſimilitudinem præſefer
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re videtur vt nemo ex pluribus amicis quibus hoc ar
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tificium communicaui fallaciam in eo latere ſuſpica
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tus fuerit, nihilominus licèt ego, nun quam ad praxim
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hoc artificium reducere curauerim, non vereor tamen
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abſolutè pronunciare motus perpetuitatem hac via
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conſe qui non poſſe, quia nimirum perſuadere mihi
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valeo grauia corpora moueri vnquam ſponte debere,
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quando nè pilum quidem magis, quàm prius
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deſcẽ-dere
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dere</
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valent atque ad centrum terræ accedere neque
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unt: cum itaque centrum grauitatis communis D am
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borum fluidorum ſemper
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in eodem plano horizon
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tali ABCD retineatur ac
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ſiſtatur mihi omninò im
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poſſibile videtur vt rotą
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ſiue tympanum AGBF
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cõ-uertatur
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uertatur</
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ad partes A ver
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ſus G. </
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centrũ
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grauitatis communis D diſtet à centro ſixo vertiginis </
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