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

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          <pb o="203" file="0281" n="308" rhead="DE USU HOROLOG."/>
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            <s xml:id="echoid-s4461" xml:space="preserve">Aliquot diebus poſt E. </s>
            <s xml:id="echoid-s4462" xml:space="preserve">G. </s>
            <s xml:id="echoid-s4463" xml:space="preserve">15. </s>
            <s xml:id="echoid-s4464" xml:space="preserve">Maji, ut detegas longi-
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            tudinem loci in quo in mari verſaris; </s>
            <s xml:id="echoid-s4465" xml:space="preserve">obſerva
              <lb/>
              <note position="right" xlink:label="note-0281-01" xlink:href="note-0281-01a" xml:space="preserve">
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              h. # m. # ſ.
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              5. # 18. # 10.
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              2. # 6. # 0.
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              1. # 57. # 22.
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              </note>
            horam diei, quæ ſit</s>
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          <p>
            <s xml:id="echoid-s4466" xml:space="preserve">Et comperis horologium A indicare</s>
          </p>
          <p>
            <s xml:id="echoid-s4467" xml:space="preserve">Sed horologium B. </s>
            <s xml:id="echoid-s4468" xml:space="preserve">indicare</s>
          </p>
          <p>
            <s xml:id="echoid-s4469" xml:space="preserve">Sed cum ſingulis diebus 7. </s>
            <s xml:id="echoid-s4470" xml:space="preserve">ſec. </s>
            <s xml:id="echoid-s4471" xml:space="preserve">tardius mo-
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            veatur, prodeunt ſpatio 74. </s>
            <s xml:id="echoid-s4472" xml:space="preserve">dierum nempe a
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            2. </s>
            <s xml:id="echoid-s4473" xml:space="preserve">Martii ad 15. </s>
            <s xml:id="echoid-s4474" xml:space="preserve">Maji</s>
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          <note position="right" xml:space="preserve">
            <lb/>
          0. # 8. # 38.
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          </note>
          <p>
            <s xml:id="echoid-s4475" xml:space="preserve">Quæ addita ad horam a B. </s>
            <s xml:id="echoid-s4476" xml:space="preserve">demonſtratam
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            prodit hora eadem ac indicavit horologium A</s>
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          2. # 6. # 0.
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          2. # 20. # 48.
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          </note>
          <p>
            <s xml:id="echoid-s4477" xml:space="preserve">Invenis etiam horologium C. </s>
            <s xml:id="echoid-s4478" xml:space="preserve">indicare</s>
          </p>
          <p>
            <s xml:id="echoid-s4479" xml:space="preserve">Sed cum moveatur 12. </s>
            <s xml:id="echoid-s4480" xml:space="preserve">ſec. </s>
            <s xml:id="echoid-s4481" xml:space="preserve">ſingulis diebus
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            citius, habemus ſpatio 74. </s>
            <s xml:id="echoid-s4482" xml:space="preserve">dierum</s>
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          0. # 14. # 48.
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          </note>
          <p>
            <s xml:id="echoid-s4483" xml:space="preserve">Quæ ſubtracta ab hora a C. </s>
            <s xml:id="echoid-s4484" xml:space="preserve">indicata, iterum
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            prodeunt</s>
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          2. # 6. # 0.
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          2. # 6. # 0.
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          0. # 19. # 29.
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          2. # 25. # 29.
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          5. # 18. # 10.
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          2. # 52. # 41.
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          </note>
          <p>
            <s xml:id="echoid-s4485" xml:space="preserve">Cum itaque hora horologiorum ſit</s>
          </p>
          <p>
            <s xml:id="echoid-s4486" xml:space="preserve">Adde illi æquationem 15. </s>
            <s xml:id="echoid-s4487" xml:space="preserve">Maji</s>
          </p>
          <p>
            <s xml:id="echoid-s4488" xml:space="preserve">Prodit hora loci ubi horologia diſpoſita ſunt</s>
          </p>
          <p>
            <s xml:id="echoid-s4489" xml:space="preserve">Sed hora obſervata eſt</s>
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          <p>
            <s xml:id="echoid-s4490" xml:space="preserve">Excedens priorem</s>
          </p>
          <p>
            <s xml:id="echoid-s4491" xml:space="preserve">Ergo Meridianus loci in quo verſaris 15.
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            </s>
            <s xml:id="echoid-s4492" xml:space="preserve">Maji Orientalior eſt, Meridianoloci, in quo
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            horologia fuere aptata</s>
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          2. # 52. # 41.
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          gr. # min. # ſec.
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          43. # 0. # 15.
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          </note>
          <p>
            <s xml:id="echoid-s4493" xml:space="preserve">Quæ horæ in gradus reductæ, ponendo 15.
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            </s>
            <s xml:id="echoid-s4494" xml:space="preserve">gradus valere unam horam, prodeunt</s>
          </p>
          <p>
            <s xml:id="echoid-s4495" xml:space="preserve">Verum eſt ex eodem calculo poſſe concludi te eſſe ſub Me-
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            ridiano hôc ipſo 180. </s>
            <s xml:id="echoid-s4496" xml:space="preserve">gradus Orientaliori, quia index hora-
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            rius revolutionem ſuam abſolvit ſpatio 12. </s>
            <s xml:id="echoid-s4497" xml:space="preserve">horarum in ho-
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            rologiis, ſed differentia tanta eſt, ut nequeas in ea decipi.
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            </s>
            <s xml:id="echoid-s4498" xml:space="preserve">Alioquin enim horologium poſſet conſtrui, cujus index cir-
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            cuitum ſuum ſemel abſolveret ſpatio 24 horarum.</s>
            <s xml:id="echoid-s4499" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4500" xml:space="preserve">Obſervandum quoque hic eſt, cum dico, locum tot gradibus
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            Orientaliorem eſſe illo ex quo abiiſti, illud dicieo reſpectu quod
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            illuc veneris ad Orientem navigans, verſus quam partem gra-
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            dus numerari poſſunt usque ad 360; </s>
            <s xml:id="echoid-s4501" xml:space="preserve">alioquin enim ſatis </s>
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