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

Table of contents

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[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.
[111.] PROPOSITIO XXI.
[112.] Centrum oſcillationis Circuli.
[113.] Centrum oſcillationis Rectanguli.
[114.] Centrum oſcillationis Trianguli iſoſcelis.
[115.] Centrum oſcillationis Parabolæ.
[116.] Centrum oſcillationis Sectoris circuli.
[117.] Centrum oſcillationis Circuli, aliter quam ſupra.
[118.] Centrum oſcillationis Peripheriæ circuli.
[119.] Centrum oſcillationis Polygonorum ordinatorum.
[120.] Loci plani & ſolidi uſus in hac Theoria.
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page |< < (144) of 434 > >|
228144CHRISTIANI HUGENII rum autem ſumma quadratorum data erit, ſi detur diſtantia
11De centro
O@CILLA-
TIONIS.
centri gravitatis figuræ S Y T Z ab recta B Y vel D Z;
nec non diſtantia indidem centri gravitatis cunei ſui abſciſſi
plano per eandem rectam .
Vel, figura S Y T Z 22Prop. 9.
huj.
exiſtente, ut S T ſit axis ejus, eadem quadratorum ſumma da-
bitur, ſi detur diſtantia centri gravitatis figuræ dimidiæ S Z T
ab axe S T, item centri gravitatis cunei, ſuper eadem di-
midia figura, abſciſſi plano per axem ducto .
Ergo, 33Prop. 11.
huj.
datis, dabitur quoque ſumma quadratorum à perpendicula-
ribus quæ, à particulis omnibus ſolidi A B C D, ductæ
intelliguntur in planum E A C.
Invenimus autem & ſum-
mam quadratorum, à perpendicularibus omnibus in planum
per E G ductis.
Ergo & aggregatum utriuſque ſummæ ha-
bebitur, hoc eſt, per ſuperius oſtenſa, ſumma quadratorum
perpendicularium quæ, à particulis omnibus ſolidi A B C D,
cadunt in rectam datam per E tranſeuntem, &
ad paginæ
hujus planum erectam.
quod erat faciendum.
PROPOSITIO XV.
IIsdem poſitis, ſi ſolidum A B C D ſit ejusmodi, ut
44TAB. XXI.
Fig. 1. & 2.
figura plana S Y T Z, ipſi proportionalis, non ha-
beat notam diſtantiam centri gravitatis à tangenti-
bus B Y vel D Z, vel, ut ſubcentrica cunei ſuper ipſa
abſciſſi, plano per easdem B Y vel D Z, ignoretur;
in figura tamen proportionali, quæ à latere eſt,
O Q P, detur diſtantia Φ P, qua centrum gravita-
tis figuræ dimidiæ O P V abeſt ab axe O P;
li-
cebit hinc invenire ſummam quadratorum à diſtan-
tiis particularum ſolidi A B C D à plano E C.
O-
portet autem ut ſectiones omnes, N N, M M, ſint
plana ſimilia;
utque per omnium centra gravitatis
transeat planum E C;
quemadmodum in prismate,
pyramide, cono, conoidibus, multisque aliis

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