Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 1: Opera mechanica

Table of contents

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[81.] VIII.
[85.] XII.
[86.] XIII.
[87.] HYPOTHESES. I.
[89.] PROPOSITIO I.
[90.] PROPOSITIO II.
[91.] PROPOSITIO III.
[92.] PROPOSITIO IV.
[93.] PROPOSITIO V.
[94.] PROPOSITIO VI.
[95.] DEFINITIO XIV.
[96.] DEFINITIO XV.
[97.] PROPOSITIO VII.
[98.] PROPOSITIO VIII.
[99.] PROPOSITIO IX.
[100.] PROPOSITIO X.
[101.] PROPOSITIO XI.
[102.] PROPOSITIO XII.
[103.] PROPOSITIO XIII.
[104.] PROPOSITIO XIV.
[105.] PROPOSITIO XV.
[106.] PROPOSITIO XVI.
[107.] PROPOSITIO XVII.
[108.] PROPOSITIO XVIII.
[109.] PROPOSITIO XIX.
[110.] PROPOSITIO XX.
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page |< < (137) of 434 > >|
218137HOROLOG. OSCILLATOR. tis figuræ A B C; erit ſumma quadratorum à di-
11De centro
OSCILLA-
TIONIS.
ſtantiis particularum, in quas figura diviſa intel-
ligitur, ab recta E D, æqualis rectangulo ſoli
A G H, multiplici ſecundum ipſarum particula-
rum numerum.
Hoc enim manifeſtum eſt, quum nullum tunc ſit quadra-
tum E G.
PROPOSITIO XI.
POſitis rurſus cæteris ut in præcedentium penul-
22TAB. XX.
Fig. 4.
tima;
ſi D E ſit axis figuræ planæ A B C, in
duas æquales ſimilesque portiones eam dividens, ſit-
que inſuper V G diſtantia centri gravitatis dimi-
diæ figuræ D A D ab recta E D, cunei vero, ſu-
per ipſam abſciſſi per ipſam E D, ſubcentrica G X;
erit rectangulum X G V æquale rectangulo A G H.
Eſt enim rectangulum X G V, multiplex ſecundum nu-
merum particularum figuræ D A D, æquale quadratis omni-
bus perpendicularium à particulis ejusdem figuræ dimidiæ in
rectam E D cadentium .
Ac proinde idem 33Prop. @.
huj.
X G V, multiplex ſecundum numerum particularum totius
figuræ A B C, æquale erit quadratis perpendicularium, ab
omnibus particulis figuræ hujus in rectam E D demiſſarum;
hoc eſt, rectangulo A G H multiplici ſecundum eundem
particularum numerum, ut conſtat ex propoſ.
præcedenti.
Unde ſequitur rectangula X G V, A G H inter ſe æqualia
eſſe.
quod erat demonſtrandum.
PROPOSITIO XII.
DAtis in plano punctis quotlibet; ſi ex centro
gravitatis eorum circulus quilibet deſcribatur;

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