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

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191119HOROLOG. OSCILLATOR.

DEFINITIONES.

11Decentro
OSCILLA-
TIONIS.

PEndulum dicatur figura quælibet gravitate præ-
dita, ſive linea fuerit, ſive ſuperficies, ſive ſo-
lidum, ita ſuſpenſa ut circa punctum aliquod, vel
axem potius, qui plano horizontis parallelus intel-
ligitur, motum reciprocum vi gravitatis ſuæ con-
tinuare poſſit.

II.

Axis ille horizontis plano parallelus, circa quem
penduli motus fieri intelligitur, dicatur axis Oſcil-
cillationis.

III.

Pendulum ſimplex dicatur quod filo vel linea in-
flexili, gravitatis experte, conſtare intelligitur,
ima ſui parte pondus affixum gerente; cujus pon-
deris gravitas, velut in unum punctum collecta,
cenſenda eſt.

IV.

Pendulum verò compoſitum, quod pluribus pon-
deribus conſtat, immutabiles diſtantias ſervantibus,
tum inter ſe, tum ab axe Oſcillationis. Hinc figura
quælibet ſuſpenſa, ac gravitate prædita, pendu-
lum compoſitum dici poteſt, quatenus cogitatu in
partes quotlibet eſt diviſibilis.

Pendula iſochrona vocentur, quorum

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Scan	Original
91	55
92	56
93	57
94	58
95	59
96	60
97	61
98	62
99	63
100	64
101
102
103
104	65
105	66
106	67
107	68
108
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111	69
112	70
113	71
114	72
115
116
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118	73
119	74
120	75

Scan	Original
91	55
92	56
93	57
94	58
95	59
96	60
97	61
98	62
99	63
100	64
101
102
103
104	65
105	66
106	67
107	68
108
109
110
111	69
112	70
113	71
114	72
115
116
117
118	73
119	74
120	75

Scan	Original
91	55
92	56
93	57
94	58
95	59
96	60
97	61
98	62
99	63
100	64
101
102
103
104	65
105	66
106	67
107	68
108
109
110
111	69
112	70
113	71
114	72
115
116
117
118	73
119	74
120	75