Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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[Figure 91]
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[Figure 98]
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MATHEMATICA. LIB. I. CCP. XIII.
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tìum verò, per quod ligni partes, aut corpora, a ſe mutuo
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recedunt, eſt baſis cunei. </
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<
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<
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xml:space
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">‘Potentiam ſe habere ad corporum ſeparandorum reſiſten-
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">204.</
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tiam, quando cum hac æquè pollet, ut baſis cunei, adillius al-
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titudinem .</
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">112.</
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<
s
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xml:space
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">Quando agitur de ligno findendo, regula hæclocum non
<
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habet; </
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<
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">quia non per æqualia ſpatia ſingulæ ligni partes ce-
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dunt, & </
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">quia, partibus quam minime ſeparatis, cohæren-
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tia in totum toliitur. </
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echoid-s2011
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in ſequenti Scholio explicantur.</
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<
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">206.</
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cum ſemiſſe, in ſitu horizontali firmatur, ad altitudinem
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">TAB. VIII
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fig. 5.</
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circiter trium pedum ſupra menſam M.</
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<
s
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xml:space
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">Hoc commodè fit ope columnæ firmæ C, cui in ſuperio-
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ri parte cohæret lignum horizontale B, in cujus extre-
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mo cavum quadratum datur, in quo intruditur cauda li-
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gnèa, quæ cum tabella cohæret, & </
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cte congruit; </
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tabella T.</
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<
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">Ad quatuor hujus angulos foramina dantur a, a, b, b.
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</
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<
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">per quæ funes tranſeunt, in ipſis foraminibus fixi; </
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æquales inter ſe circiter tres pedes longi.</
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<
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& </
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">e; </
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ſentantur in E aut E.</
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<
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">Ope harum duo ſuſpenduntur cylindri lignei h, h; </
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ctio juxta axem repræſentatur in H; </
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ubi baſes paulum prominent, æqualis eſt diſtantiæ inter fo-
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ramina a & </
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chalybei ſunt, & </
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foramina majora tranſeunt, cum quibus congruunt; </
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men ut in his quam liberrimè rotari poſſint.</
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<
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ſe; </
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