Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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na aerea FS æquali ipſi GS, tunc patet, quòd poten
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tiæ comprimentes mercurij FB, & aeris FS æquales
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ſunt potentiæ eiuſdem mercurij FB, & aeris SG. </
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dico, quod duplò validiori vi comprimitur aer DG
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clauſo orificio G, & aperta ſummitate A, quàm illo
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aperto, & hoc clauſo. </
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<
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perto in G ampulla aerea DG ſtringitur à duabus
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oppoſitis potentijs, à mercurio nempè FB, & ab aeris
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columna SG, ergo vis, qua aerea veſica DG ſtringitur
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æqualis eſt duabus poténtijs mercurij BF, & aeris SG,
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ſeu duplò ponderis mercurij BF. è contra clauſo ori
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ſicio G, & aperto vitro in A duæ potentiæ mercurij
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BF, & aeris SF comprimunt
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DG in D, qui
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aer innititur fundo ſtabili, nempè operculo G, igitur,
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ex corollario præcedentis, propoſitionis vis, qua aer
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DG ſtringitur æqualis eſt duplò
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mèrcu
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rij BF, & aeris SF, nempèl quadruplò potentiæ mer
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curij BF; igitur dupla vi, & energia
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aer
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DG clauſo orificio G, & aperto vitro in A, ac
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mebatur</
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quando vitrum claudebatur in A, reſeraba
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tur verò in G. </
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Cap. 5. de ae
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ris grauitate
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æquilibrio,
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ſtructura, &
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vi elateria
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eius.</
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Ex 1. parte
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top. III. </
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magis conſtringi, condenſarique debeat aer DG, &
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proinde mercurius deprimatur infra ſupremam ele
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uationem F mirum profectò non eſt, imò iuxtà ordi
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nem naturæ, & neceſſitatem, qua operatur debet
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mercurius in prædicto caſu aliquantulum deprimi, vt
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exigit aeris natura, quæ dilatationi, & conſtrictioni
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obnoxia eſt. </
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DG pro-</
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