Full text: Gravesande, Willem Jacob: Physices elementa mathematica, experimentis confirmata, sive introductio ad philosophiam Newtonianam

Præter hunc & alium uſum collationis denſitatum indi-
cabo.

Si ex metallis duobus notis mixtum detur, poterit deter-
minari quantum utriuſque contineat, ſi metallorum & mixti
denſitates dentur.

307.1.

791.

Sint metallorum denſitates AB, AD; mixti denſitas AC. Sint etiam AL & LI, ut volumina metallorum primi & ſe-
cundi in mixto. Ponamus formatum rectangulum ABEI,
ductaſque lineas CG, DH, FL, lateribus parallelas.

307.1.

TAB. XXXI.
fig. 6.

Pondus primi metalli in mixtura rectangulo AF repræ-
ſentari poteſt ; repræſentatque in hoc caſu rectangulum LH pondus metalli ſecundi, eſtque gnomon ABFMHIA
pondus integri mixti; hoc etiam rectangulo ACGI exhi-
betur ; quod idcirco gnomoni memorato æquale eſt.

307.1.

739.
739

Subtracto utrimque gnomone communi CNMHI, re-
ſtant æqualia rectangula BN, NH, ductaque DE tranſibit
hæc per punctum N . Ergo DH, aut AI, ad NG, aut LI, ut HE ad GE; id eſt volumen mixti ad volu-
men ſecundi metalli in mixto, ut differentia denſitatum me-
tallorum primi & ſecundi ad differentiam denſitatum metal-
li primi & mixti.

307.1.

43. El. Id
792.

Pondus autem totius mixturæ eſt ad pondus metalli ſe-
cundi in mixto, in ratione compoſita denſitatum mixti & ſecundi metalli, & ratione voluminis mixti & voluminis
ſecundi metalli in mixto , id eſt ut productum denſitatis mixti per differentiam denſitatum metallorum ad denſita-
tem ſecundi metalli ductamin differentiam denſitatum primi
metalli & mixti.

307.1.

793.
739.
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