Borro, Girolamo
,
De motu gravium et levium
,
1575
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& magnetis corpus eſt corpore ferri rarius. </
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<
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gnete plures & maiores ſunt vacuitates, quam in ferro.
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<
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">Hinc ſequirebantur atomos illas quas magnes edit, ad ſibi ſi
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miles, quæ ſunt in ferro atomos incitari, eaſdem ex ferri va
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cuitatibus excludere, earumdem loca occupare, à ferro exclu
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ſa indiuidua corpuſcula ad magnetem, vt ad ſimilem moueri
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& ſecum ferrum, quod ad magnetem mouetur, hac ratione
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ducere. </
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">Magnes ad ferrum non cietur, quia tot vacuitates
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non ſunt in ferro, quot in magnete, nec ex ferro tot egrediun
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tur corpora, quot ex magnete, nec eſt ferrum tam peruium,
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vt magnes. </
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<
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id
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">Quamquam isti multa vera dicunt, vt est illud
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ſimile, licet non ſemper, aliquando tamen, ad ſimile ferri, &
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Herculeum lapidem, ac ferrum ex ſimilibus constare, & fer
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rum ad lapidem Herculeum, vt ad ſimilem moueri, tamen
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quia de electro, & adamante feſtucas, & minutas paleas ad ſe
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trahente quorum ſolidum, & inane, & quorum effluentia
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corpora ſunt dissimilia, ſi hæc omnia dantur, nihil dixerunt,
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effugere
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potuerunt, quin grauissimè reprehendantur: quin
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etiam ſi omnium à ſimili attractio fit, quam plurima, quæ ex
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ſimilibus constant, ſe vicissim traherent, quorum nullum à
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nullo trahitur.
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Diogenes, non illæ Laertius, sed alter Appolloniates du
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ctilia omnia (inquit) ſic à natura comparata ſunt, vt humi
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ditatem quamdam emittant, & eamdem ab extrinſeco ad ſe
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trahant, hæc quidem maiorem, illa verò minorem, cuius gra
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tia ab igni liquantur, humiditatem plurimam æs, & ferrum
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emictunt, huius ſignum inde colligunt, quod ferri, & æris
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cũ
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abigni liquantur, non nihil abſumitur: ferrum multum hu
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miditatis reddit, multum etiam accipit lapis Herculeus, quia
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