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

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          <head xml:id="echoid-head201" xml:space="preserve">EXCERPTA EX LITERIS HAGÆ CO-
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          MITUM, DIE XXVI. FEBRUAR
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          MDCLXV. DATIS.</head>
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            <s xml:id="echoid-s4723" xml:space="preserve">CUm per aliquot dies neceſſe mihi foret cubiculum
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            tenere, & </s>
            <s xml:id="echoid-s4724" xml:space="preserve">variis obſervationibus circa duo
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            mea novæ fabricæ Horologia pendula tempus im-
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            penderem, mirum quendam eorum effectum, & </s>
            <s xml:id="echoid-s4725" xml:space="preserve">a
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            nemine unquam vel cogitandum, detexi. </s>
            <s xml:id="echoid-s4726" xml:space="preserve">Suſpenſa enim juxta
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            ſe invicem ad diſtantiam unius aut duorum pedum, tam accu-
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            rate congruebant, ut ſine ullâ variatione pendulorum vibra-
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            tiones ſimul peragerentur. </s>
            <s xml:id="echoid-s4727" xml:space="preserve">Quod cum per aliquod tempus im-
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            penſe miratus fuiſſem, tandem reperi ex aliquâ quaſi ſympa-
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            thiâ id oriri; </s>
            <s xml:id="echoid-s4728" xml:space="preserve">ita ut ſi pendula moviſſem vibrationibus diverſis
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            & </s>
            <s xml:id="echoid-s4729" xml:space="preserve">ut ita dicam intermixtis, intra dimidiæ horæ ſpatium con-
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            ſona rurſus fierent, & </s>
            <s xml:id="echoid-s4730" xml:space="preserve">ſibi mutuo, quamdiu motum non tur-
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            babam, reſponderent. </s>
            <s xml:id="echoid-s4731" xml:space="preserve">Remotis deinde à ſe invicem Horologiis,
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            & </s>
            <s xml:id="echoid-s4732" xml:space="preserve">ad diſtantiam 15. </s>
            <s xml:id="echoid-s4733" xml:space="preserve">pedum ſuſpenſis, uno die quinque ſecun-
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            dorum diſcrepantiam animadverti, quæ clare demonſtravit,
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            priorem pendulorum convenientiam, uti dixi, à ſympathia
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            quadam debuiſſe proficiſci, quæ, meo quidem judicio, unicè
              <lb/>
            inſenſili aëris agitationi, per pendulorum motus productæ, ad-
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            ſcribi poteſt. </s>
            <s xml:id="echoid-s4734" xml:space="preserve">Continentur tamen Horologia ſuis Capſis, quarum
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            utraque ſi omne plumbum contentum numeres, centum fere </s>
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