Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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quidem quæ ad conſtructionem automati pertinent declaravi-
<
lb
/>
mus.</
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<
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<
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xml:space
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">Reliquum eſt, ut, quantum idem iis omnibus, quæ ad
<
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hanc diem in uſu fuere, antecellat, perſpicuum facia-
<
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mus. </
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<
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xml:space
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">Satis conſtat plurimas in his erroris & </
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xml:space
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tis cauſas eſſe. </
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<
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xml:space
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xml:space
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">in diſponendis rite elimandiſque
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tympanis vel leviſſimum peccatum, continuo motus in-
<
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conſtantia notabilis conſequitur. </
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<
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xml:space
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">Tum vero & </
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>
<
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xml:space
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">ſiccato
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atque evaneſcente oleo, quod axibus addi ſolet, tardius
<
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horæ procedunt. </
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>
<
s
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xml:space
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">atque ut hæc abſint, varias tamen, an-
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ni tempeſtatum & </
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<
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xml:space
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">aeris, mutationes horologia ſentiunt,
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imo præſentiunt nonnunquam: </
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xml:space
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">& </
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<
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xml:space
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que pigriora comperiuntur, æſtu plus æquo properant.
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</
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<
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xml:space
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">Penduli vero cum ſit ea vis ac proprietas, ut neceſſario eo-
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dem ſemper tenore feratur, neque ab eo niſi mutata lon-
<
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gitudine unquam declinet; </
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<
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xml:space
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">apparet ſane omnia illa quæ
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diximus incommoda invento noſtro penitus nos ſuſtuliſſe,
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/>
adeo ut niſi tale quod interveniat impedimentum, quo
<
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horologii motus omnis ſiſtatur, nulla jam curſus ejus
<
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retardatio aut inæqualitas timenda ſit. </
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nemini duplicem hic dubitandi cauſam oboriri poſſe
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ſcio. </
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">Primum, quod differre à pendulo libero no-
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ſtrum hoc videatur, quippe ad ſingulas vibrationes vim
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quandam ac nixum clavulæ Q R ſentiens. </
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xml:space
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">Deinde
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quod, etiamſi penduli ſimplicis proprietates retineat,
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perque omnia æmuletur, hujus tamen ipſius geminæ
<
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inæqualitates à nonnullis, qui ſubtiliter hæc perquiſive-
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runt, animadverſæ ſint. </
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xml:space
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preſſione dicitur verum eſſe non diffitemur. </
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xml:space
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">Sed leviſſi-
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mam utique hanc eſſe novimus ratione gravitatis T, quæ
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ſic temperatur, ut tantum non deficiat penduli agita-
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tio, ſed quam minimâ, & </
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ſeveret. </
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<
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xml:space
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">Proinde nihilo concitatior aut minus æquabilis
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hic ipſius motus evadit, quam ſi clavulæ prorſus obno-
<
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/>
xius non eſſet, pendulumque ſimplex S I T, ut adhuc
<
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/>
fieri conſuevit, manu impelleretur. </
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<
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