Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

Table of figures

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              <s id="N15EA2">COMMENTARIVS.</s>
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              <s id="N15EA8">Dvas hic peracutas difficultates proponit Ariſtote­
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              les examinandas,
                <expan abbr="easq.">easque</expan>
              ingenioſiſſimas, quas accu­
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              ratè admodum contemplari, ac diligentiſſimè pon­
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              derare opere pretium eſt, cum non parum confert ad miſto­
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              rum motuum naturam,
                <expan abbr="variamq.">variamque</expan>
                <expan abbr="proportionẽ">proportionem</expan>
              internoſcen­
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              dam prout mechanicos maximè decet. </s>
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              <s id="N15EC3">Prima difficultas eſt, cur ſi duo puncta extrema vnius la­
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              teris in rhombo duabus ſimul ferantur lationibus cum ea­
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              dem velocitate, vnum maius, alterum minus ſpatium per­
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              currit. </s>
              <s id="N15ECC">Ad cuius rei explicationem ſupponimus ex. </s>
              <s id="N15ECF">31. de­
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              finitione primi Euclidis Rhombum eſſe figuram quadrila­
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              teram quidem, & æquilateram, ſed non rectangulam; quip­
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              pe quæ duos angulos habet acutos, duos verò obtuſos. </s>
              <s id="N15ED8">Si
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              igitur in Rhombo ABCD, cuius
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              acuti anguli ſint A & D, obtuſi
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              verò B & C, duo extrema pun­
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              cta lateris AB, nempe ipſum A, &
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              ipſum B, æqua velocitate duabus
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              ferantur lationibus, vna qua pun­
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              ctum A ſuper idem latus feratur
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              verſus B, & B feratur verſus A:
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              altera verò qua
                <expan abbr="dũ">dum</expan>
              ipſa duo pun­
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              cta ſibi obuiam procedunt, ſimul
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              cum toto latere AB, moueantur
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              verſus latus CD, ita vt ſemper la­
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              tus, ſeu linea AB, ipſi CD ſit pa­
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              ralella, deſcendatque per latera
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              AC, & BD quouſque coincidat
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              cum eadem CD: Cum ex duabus lationibus, eadem ſem­
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              per laterum proportione ſeruata, recta quædam linea pro­
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              ducatur, vt ſupra demonſtratum eſt ex eodem Ariſtotele
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              1. par. </s>
              <s id="N15F0B">tex. 6. vtraque puncta prædicta eandem laterum ip­
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              ſius rhombi proportionem in ſuo motu ſeruando, propriam </s>
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