Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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HOROLOG. OSCILLATOR.
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tionaliter moveantur. </
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<
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xml:space
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">Quamobrem ſiquid in fabrica vi-
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<
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<
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<
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emph
>
-
<
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<
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.</
note
>
tii fuerit, vel, ob aëris mutatam temperiem, diffici-
<
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lius rotarum axes volvantur; </
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<
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xml:space
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">dummodo non eo usque ut
<
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omnis horologii motus interrumpatur; </
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>
<
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xml:space
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">nulla propter
<
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/>
hæc inæqualitas aut motus retardatio timenda erit, ſem-
<
lb
/>
perque aut rectè tempus metietur aut omnino non metie-
<
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/>
tur.</
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<
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</
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<
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<
s
xml:id
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xml:space
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">Indices porro hoc pacto circumaguntur atque ordinantur.
<
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</
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<
s
xml:id
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xml:space
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">Tertia lamina prioribus parallela eſt Y Y, pollicis quarta
<
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/>
parte diſtans ab ea quæ notatur A A. </
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>
<
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xml:id
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xml:space
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">In ea circuli horarii
<
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deſcripti ſunt centro eodem α quo protenditur axis rotæ C. </
s
>
<
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xml:space
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<
lb
/>
Quorum circulorum interior duodecim horarum diviſionem
<
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habet, alter ſcrupulorum 60. </
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>
<
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xml:id
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xml:space
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">Axi vero rotæ C aptatur, ul-
<
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tra laminam A A, rota ß, tubulo cohærens qui usque ad ε
<
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continuatur trans laminam Y Y; </
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<
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xml:space
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">atque ita inſidet axi illi,
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ut una cum illo circumferatur; </
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<
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xml:space
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">ſine illo tamen, ubi opus
<
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fuerit, converti poſſit. </
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<
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xml:space
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">Ad ε index imponitur, horæ ſpa-
<
lb
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tio circuiturus atque ita ſcrupula prima, ſeu ſexageſimas ho-
<
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/>
rarum, demonſtraturus. </
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>
<
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xml:id
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xml:space
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">Rota vero quam diximus ß, aliam
<
lb
/>
rotam, totidem quot ipſa habet dentium, impellit, atque
<
lb
/>
una affixum ei tympanum cui dentes ſex, axiculo eorum
<
lb
/>
communi hinc laminâ A, inde gnomone δ ſuffulto. </
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>
<
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xml:id
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xml:space
="
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">Hoc
<
lb
/>
tandem tympano rota ζ movetur, dentes habens 72, tubu-
<
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/>
lumque affixum qui & </
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>
<
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xml:id
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xml:space
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">ipſe ultra laminam Y ad θ porrigitur,
<
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/>
paulo citra quam deſinit tubulus rotæ ß, quem intra ſe com-
<
lb
/>
plectitur. </
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>
<
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xml:space
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">Parte extrema θ apponitur horarius index, brevior
<
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aliquanto illo quem ſcrupula prima ſignare diximus, cum in-
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/>
teriore gyro ferri debeat. </
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>
<
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xml:space
="
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">Secunda vero ſcrupula ut absque
<
lb
/>
errore demonſtrentur, imponitur axi rotæ H, usque ad la-
<
lb
/>
minam Y producto, orbis λ, cui circulus in ſexaginta par-
<
lb
/>
tes diviſus inſcribitur, inciſoque in laminâ Y foramine
<
lb
/>
ad Z, eæ diviſiones, cuspide in ſummo foramine defixâ,
<
lb
/>
prætereuntes notantur. </
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>
<
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xml:space
="
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">Hæc vero tota indicum circulo-
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rumque horariorum diſpoſitio ex figura minori (fig. </
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>
<
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">3.) </
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rius perſpicitur, exteriorem horologii formam referen-
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te.</
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