Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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MATHEMATICA. LIB. II. CAP. I.
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ſu arceant; </
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">ipſam vero gravitatem eo non deſtrui liquet,
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cum vaſe contentum fluidum pro ſua quantitate gravet li-
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bram, cui vas appenditur; </
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<
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ubique in fluido particulas gravitatem ſervare probatur.</
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.</
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id eſt, circa gravitatem fluidorum, utimur bilance, quan-
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fig. 1.</
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tum fieri poteſt, exacta, jugi longitudo eſt circiter octo pol-
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licum; </
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">in medio inferiorum ſuperficierum lancium unci
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junguntur, quibus corpora fluidis immergenda ſuſpendun-
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tur; </
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res, longitudinis circiter ſemi pollicis, quibus ſuſtinentur
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quando lances, ſuſpensâ bilance, tabellæ T imponuntur.</
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<
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">Suſpenditur autem bilanx duobus funibus, qui ſinguli
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duobus trochleis cum columna C cohærentibus, ut A & </
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circumponuntur ita, ut moto pondere P, bilanx elevetur,
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& </
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<
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">In tabella hac foramina duo, diametri trium partium
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quartarum pollicis, dantur, quæ uncis lancium reſpondent,
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& </
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">per quæ tranſeunt fila ænea, aut capilli equini, quibus
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corpora libræ applicanda uncis junguntur.</
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nem cohibeamus, ipſius autem nimiam agitationem vita-
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mus, imponendo lances tabellæ T, & </
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paululum tantum elevando.</
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<
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1.</
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aquâ immergitur, & </
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librium; </
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pleatur, aqua in phiala gravabit libram, licet cum aqua ex-
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teriori communicationem habeat; </
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brium inſtauretur, ſervabitur ad quamcumque altitudinem
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phiala aquâ immergatur.</
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<
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cluſi ne effluat, ſi ſuperne illud non prematur, aut æqualiter
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prematur, quo gravitatis actio non mutatur, planam </
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