Gravesande, Willem Jacob 's, Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1

Table of contents

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[11.] LIBRI I. PARS II. De Actionibus Potentiarum.
[12.] LIBRI I. PARS III. De Motibus, Potentiarum Actionibus, Variatis.
[13.] LIBRI I. PARS IV. De Viribus inſitis, & Colliſione corporum.
[14.] LIBRI II. PARS I. De Gravitate & Preſſione Fluidorum.
[15.] LIBRI II. PARS II. De Motu & Reſiſtentia Fluidorum.
[16.] LIBRI II. PARS III. De Aëre & aliis Fluidis Elaſticis.
[17.] PHYSICES ELEMENTA MATHEMATICA, EXPERIMENTIS CONFIRMATA. LIBER I. Pars I. de Corpore in genere. CAPUT I. De Scopo Phyſices & Regulis philoſophandi.
[18.] Definitio 1. & 2.
[19.] Definitio 3.
[20.] Definitio 4.
[21.] Regula 1.
[22.] Regula 2.
[23.] Regula 3.
[24.] CAPUT II. De Corpore in genere.
[25.] CAPUT III. De Extenſione, Soliditate, & Vacuo.
[26.] Experimentum 1.
[27.] Experimentum 2.
[28.] CAPUT IV. De Diviſibilitate Corporis in infinitum, & parti-cularum Subtilitate.
[29.] SCHOLIUM. De Materiæ Diviſibilitate
[30.] Infinitum finito contineri.
[31.] De Spirali logaritbmicâ, & bujus menſurâ.
[32.] De infinitorum Inæqualitate
[33.] De infinitorum claſſibus.
[34.] SCHOLIUM 2. De partium Subtilitate.
[35.] CAPUT V. De cobæſione partium, ubi de Duritie, Mollitie, Fluidi-tate, & Elaſticitate agitur.
[36.] Definitio 1.
[37.] Definitio 2.
[38.] Definitio 3.
[39.] Definitio 4.
[40.] Experimentum 1.
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Sit c tertia proportionalis ipſis a & b, utcunque ſumtis; ergo ac = bb.
Multiplicando per c æquationem ax = yy, habemus acx = yyc, id eſt bbx = yyc.
in
ſecunda curva bbx valet z3;
ergo z3 = yyc, ſi abſciſſa x fuerit eademiu
utraque
curva.
Sit ax = yy & g 1 {1/10} x = s 2 {1/10} id eſt, g {11/10} x = s {21/10}; ordinatas deſignat s, & g
conſtantem
lineam, quamdiu curva non mutatur.
Fiat ut a ad g, ita g {1/10} ad
quartam
quantitatem, quæ dicatur b {1/10};
ergo g{11/10} = ab{1/10}; multiplican-
do
per b {1/10} æquationem ax = yy datur ab {1/10} x = g {11/10} x = y2 b {1/10} = s {21/10};
under deducimus s {1/10}, b {1/10}: : yy. ss. Idcirco in viciniis puncti A, ubi s
neceſſario
minor eſt determinatâ b, erit etiam y minor s unde liquet quod de
angulis
dictum.

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