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

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296191HOROLOG. OSCILLATOR.

11De vi
CENTRE-
FUGA.

Si mobile in circumferentia feratur, circuitus-
que ſingulos abſolvat eo tempore, quo pendulum,
longitudinem ſemidiametri circumferentiæ ejus ha-
bens, motu conico circuitum minimum abſolveret,
vel duplicem oſcillationem minimam lateralem: ha-
bebit vim centrifugam ſuæ gravitati æqualem.

XI.

Penduli cujuslibet, motu conico lati, tempora
circuitus æqualia erunt tempori caſus perpendicula-
ris, ex altitudine penduli filo æquali; cum angu-
lus inclinationis fili, ad planum horizontis, fuerit
partium 2. ſcrup. 54, proxime. Exacte vero, ſi
anguli dicti ſinus fuerit ad radium, ut quadra-
tum circulo inſcriptum ad quadratum à circumfe-
rentia ejus.

XII.

Si pendula duo, pondere æqualia, ſed inæquali
filorum longitudine, motu conico gyrentur, fue-
rintque conorum altitudines æquales; erunt vires,
quibus fila ſua intendent, in eadem ratione quæ
eſt filorum longitudinis.

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97	61
98	62
99	63
100	64
101
102
103
104	65
105	66
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107	68
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114	72
115
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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