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

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            <s xml:id="echoid-s417" xml:space="preserve">
              <pb o="11" file="0035" n="35" rhead="HOROLOGIUM."/>
            quidem quæ ad conſtructionem automati pertinent declaravi-
              <lb/>
            mus.</s>
            <s xml:id="echoid-s418" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s419" xml:space="preserve">Reliquum eſt, ut, quantum idem iis omnibus, quæ ad
              <lb/>
            hanc diem in uſu fuere, antecellat, perſpicuum facia-
              <lb/>
            mus. </s>
            <s xml:id="echoid-s420" xml:space="preserve">Satis conſtat plurimas in his erroris & </s>
            <s xml:id="echoid-s421" xml:space="preserve">inæqualita-
              <lb/>
            tis cauſas eſſe. </s>
            <s xml:id="echoid-s422" xml:space="preserve">Nam & </s>
            <s xml:id="echoid-s423" xml:space="preserve">in diſponendis rite elimandiſque
              <lb/>
            tympanis vel leviſſimum peccatum, continuo motus in-
              <lb/>
            conſtantia notabilis conſequitur. </s>
            <s xml:id="echoid-s424" xml:space="preserve">Tum vero & </s>
            <s xml:id="echoid-s425" xml:space="preserve">ſiccato
              <lb/>
            atque evaneſcente oleo, quod axibus addi ſolet, tardius
              <lb/>
            horæ procedunt. </s>
            <s xml:id="echoid-s426" xml:space="preserve">atque ut hæc abſint, varias tamen, an-
              <lb/>
            ni tempeſtatum & </s>
            <s xml:id="echoid-s427" xml:space="preserve">aeris, mutationes horologia ſentiunt,
              <lb/>
            imo præſentiunt nonnunquam: </s>
            <s xml:id="echoid-s428" xml:space="preserve">& </s>
            <s xml:id="echoid-s429" xml:space="preserve">frigore quidem plerun-
              <lb/>
            que pigriora comperiuntur, æſtu plus æquo properant.
              <lb/>
            </s>
            <s xml:id="echoid-s430" xml:space="preserve">Penduli vero cum ſit ea vis ac proprietas, ut neceſſario eo-
              <lb/>
            dem ſemper tenore feratur, neque ab eo niſi mutata lon-
              <lb/>
            gitudine unquam declinet; </s>
            <s xml:id="echoid-s431" xml:space="preserve">apparet ſane omnia illa quæ
              <lb/>
            diximus incommoda invento noſtro penitus nos ſuſtuliſſe,
              <lb/>
            adeo ut niſi tale quod interveniat impedimentum, quo
              <lb/>
            horologii motus omnis ſiſtatur, nulla jam curſus ejus
              <lb/>
            retardatio aut inæqualitas timenda ſit. </s>
            <s xml:id="echoid-s432" xml:space="preserve">At enimvero non
              <lb/>
            nemini duplicem hic dubitandi cauſam oboriri poſſe
              <lb/>
            ſcio. </s>
            <s xml:id="echoid-s433" xml:space="preserve">Primum, quod differre à pendulo libero no-
              <lb/>
            ſtrum hoc videatur, quippe ad ſingulas vibrationes vim
              <lb/>
            quandam ac nixum clavulæ Q R ſentiens. </s>
            <s xml:id="echoid-s434" xml:space="preserve">Deinde
              <lb/>
            quod, etiamſi penduli ſimplicis proprietates retineat,
              <lb/>
            perque omnia æmuletur, hujus tamen ipſius geminæ
              <lb/>
            inæqualitates à nonnullis, qui ſubtiliter hæc perquiſive-
              <lb/>
            runt, animadverſæ ſint. </s>
            <s xml:id="echoid-s435" xml:space="preserve">Hìc illud quod de clavulæ im-
              <lb/>
            preſſione dicitur verum eſſe non diffitemur. </s>
            <s xml:id="echoid-s436" xml:space="preserve">Sed leviſſi-
              <lb/>
            mam utique hanc eſſe novimus ratione gravitatis T, quæ
              <lb/>
            ſic temperatur, ut tantum non deficiat penduli agita-
              <lb/>
            tio, ſed quam minimâ, & </s>
            <s xml:id="echoid-s437" xml:space="preserve">eâdem tamen latitudine per-
              <lb/>
            ſeveret. </s>
            <s xml:id="echoid-s438" xml:space="preserve">Proinde nihilo concitatior aut minus æquabilis
              <lb/>
            hic ipſius motus evadit, quam ſi clavulæ prorſus obno-
              <lb/>
            xius non eſſet, pendulumque ſimplex S I T, ut adhuc
              <lb/>
            fieri conſuevit, manu impelleretur. </s>
            <s xml:id="echoid-s439" xml:space="preserve">Et hoc quidem </s>
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