Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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PHYSICES ELEMENTA
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<
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calis, longitudinis circiter trium pedum, altitudinis unius
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<
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fig. 2.</
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pedis.</
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<
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nentur duo Priſmata H, H, ad formam cunei, quæ juxta illas
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regulas moventur, & </
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per ſcisſuras in tabula firmantur.</
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partem utramque verſus, ad ſitum Priſmatum determinan-
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dum.</
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<
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chlea T, cujus figura datur in F, fig. </
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nectitur extremitati regulæ m n, & </
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trochleam T, pondere P illam tendente, & </
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ſuſtinentibus.</
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mas diviſa, juxta quas diviſiones movetur lamina ænea fg,
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quæ chordæ appenditur, & </
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hæc immittitur; </
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cum lamina f g exacte eſt ponderis unius unciæ.</
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<
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ſtantiæ inter apices Priſmatum H, H; </
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minimis, circa quas ſolas Experimenta fiunt; </
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C appenſis, chorda ſuper Priſmatibus non movetur, pondus
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P non elevatur, & </
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producitur.</
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<
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bus laminæ e d, nam extremitas g laminæ g c æqualiter ſemper
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cum puncto C, in chordæ inflexione, deſcendit.</
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C pondere unius unciæ, id eſt, pondere lancis & </
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