Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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Sed, vt tu ipſe agnoſcis, demonſtrationes quæro, non veriſi
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militudines, aut ſuſpiciones.
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<
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">Tu verò & optimè facis, & beatior me longè es, ſi
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demonſtrationes adinuenias, nec ea amplexeris, quæ
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apertè falſa cùm ſint, ne veriſimilitudinis quidem, aut
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ſuſpicionis nomen mereantur. </
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Quòd autem in Confirmationem adducis quatuor globos
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quatuor distinctis filis ſic appenſos, vt primi longitudo ſit
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vnius pedis, ſecundi quatuor, tertij nouem, quarti ſexdecim:
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aiſque eos, ſi ex quapiam altitudine ſimul dimittantur, ſuas
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inter ſe vibrationes ita componere, vt dum quartus globus
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vnam perficiet, tertius duas, ſecundus treis, & primus quatuor
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abſoluat. </
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">Hæc, inquam, & quæ inde colligis, nec certiora
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ſunt, nec exactiùs cum experientia congruunt, quàm ea, qui
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bus confirmandis aſſumpta ſunt. </
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<
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id
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">Etſi enim in paucis ali
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quibus vibrationibus ea ratio vtcúmque obſeruari videatur;
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breut tamen interrumpitur, vt ſæpius à me experientia
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combrobatum est; cuius etiam rationem indicat, qui noua
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G
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alilei placita Gallicè reddidit lib.
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1.
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artic.
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17.
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vbi ipſe quo
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que ſe expertum eſſe aſſerit, vibrationes omneis eiuſdem pen
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duli æquali tempore perpetuò non abſolui: quod tamen neceſ
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ſarium eſſet, vt conſenſus ille vibrationum diutiùs perma
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neret.
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<
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falſum nunquam deprehenderim, quoties aſſumun
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tur, & quandiù manent longitudinum exquiſitè ea
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rumdem. </
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<
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">Nam quia non ponderis, ſed longitudinis
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variatio vibrationum celeritatem, aut tarditatem va
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riat, ideò niſi quatuor illa pendula aſſumantur exqui
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ſitè longitudinum præſcriptarum, fiet ſenſim, vt quod </
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