Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646

Table of figures

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              <s id="s.000445">
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              eiuſdem rectæ
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              C
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              D attollatur ad
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              G,
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              inde liberè dimiſſus,
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              pari modo ad eandem rectam CD, aut proximè ad eam
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              conſcendet verſus H. Jmò, ſi ex F ſuſpenſus attollatur ad
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              I, inde feretur, vſque ad K. </s>
              <s id="s.000446">Per diuerſos igitur illos arcus
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              decidens globus, ſemper ad æqualem altitudinem conſcendit.
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              <s id="s.000447">Ergo è quolibet deſcenſu æqualem acquirit impetum; niſi
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              enim eſſet impetus æqualis, globum ad æqualem altitudinem
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              non attolleret. </s>
              <s id="s.000448">Quid ni igitur idem quoque faciat globus,
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              ſi per plana CB, GB, IB deſcendat?
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              C
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              redibile igitur
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              etiam eſt globum per illa, aut ſimilia plana decidentem, æqua­
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              lem tali deſcenſu impetum, ac proinde æqualem quoque ve­
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              locitatis gradum acquirere.
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              </s>
              <s id="s.000449"> Subinde autem, vt oſten­
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              das quàm hæc ſint incerta, incohæcentia, &c.
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              Impri­
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              mis quidem neſcio,
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              inquis,
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              an globi ea, qua vult
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              G
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              alileus
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              ratione ſuſpenſi, ac librati alitùs in Etruria, quàm in Gal­
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              lia aſſurgant; at heic neque tam propè ad horizontalem li­
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              neam, neque per diuerſos arcus ad eam æqualiter accedunt.
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              </s>
              <s id="s.000450">Nempe filo pedum quatuor cum dimidio ſuſpenſus globus ad
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              lineam horizontalem tribus infra centum pedibus
                <expan abbr="deſcriptã">deſcriptam</expan>
              ,
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              propiùs quàm duobus digitis nunquam acceßit. </s>
              <s id="s.000451">At centro
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              nouem tantum digitis ſupra lineam horizontalem accepto,
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              filóque duorum pedum conſtituto, iam globus ad lineam ho­
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              rizontalem vno digito, quàm anteà propiùs acceßit. </s>
              <s id="s.000452">Vbi
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              verò centrum ſeptem infra lineam horizontalem digitis aſ­
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              ſumptum est, vix ad quatuor à linea horizontali digitos
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              globus aſcendit.
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              <s id="s.000453"> Concludis idcircò his verbis,
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              Qua
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              igitur fide
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              G
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              alileus tam aſſeueranter ait globum ita ſuſpen­
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              ſum, ac per quoſcumque arcus librarum, ad æqualem ſem­
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              per altitudinem aſſurgere? </s>
              <s id="s.000454">aut quomodo ex re adeò euiden­
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              ter falſa petere auſus eſt testimonium veritatis?
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