Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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CHRISTIANI HUGENII
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perientia optime comprobat. </
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<
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xml:space
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">Penduli vero ipſius, quas ad-
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lb
/>
notant, binas inæqualitates, alii autem contra pernegant,
<
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/>
earum alteram admittimus, ſed vix quicquam horologio no-
<
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/>
ſtro officientem, alteram plane nullam eſſe adſeverare non
<
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dubitamus. </
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>
<
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xml:space
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">Illud itaque vere aſſerunt, non prorſus æquali
<
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tempore latiores ejusdem penduli ac anguſtiores vibrationes
<
lb
/>
tranſire, ſed his illas paulo plus inſumere, quod facili ex-
<
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/>
perimento demonſtrari poteſt. </
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>
<
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xml:id
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xml:space
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preserve
">Nam ſi pendula duo, pon-
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/>
dere ac longitudine æqualia, alterum procul à perpendicu-
<
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/>
lo, alterum parumper dimoveantur, ſimul dimiſſa, non
<
lb
/>
diu in partes eaſdem una ferri cernentur, ſed prævertet il-
<
lb
/>
lud cujus exiliores erunt recurſus. </
s
>
<
s
xml:id
="
echoid-s443
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xml:space
="
preserve
">Verum huic inæqualitati
<
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noſtrum, uti dixi, horologium minus obnoxium eſt, eo
<
lb
/>
quod omnes oſcillationes æquali ſpatio à perpendiculo ex-
<
lb
/>
currant. </
s
>
<
s
xml:id
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xml:space
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">Nec tamen in totum expers remanſit, ſi minutiſ-
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ſima quæque, ſicut hac in re fieri neceſſe eſt, conſectari ve-
<
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limus. </
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>
<
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xml:space
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">Contingit ſiquidem vel aëris intemperie, vel operis
<
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vitio aliquo, ut non ſemper pari vi agitetur clavula Q R,
<
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unde & </
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>
<
s
xml:id
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xml:space
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preserve
">oſcillationes penduli (licet exiguo diſcrimine) cre-
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ſcere ac rurſus imminui neceſſe eſt. </
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>
<
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xml:space
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curſus arctioribus, ſicut modo dicebam, plus temporis im-
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pendant; </
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>
<
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xml:space
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">idcirco nonnulla hinc in horologii motu inæquali-
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tas exiſtit. </
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<
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xml:space
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">Et huic quidem, utut contemptibilis videri poſ-
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ſit, remedium etiam adhibere ſolebamus, quamdiu ita con-
<
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/>
ſtructa erant horologia, ut majuſcula eſſet penduli agitatio.
<
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</
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<
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xml:space
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">Poſtmodum vero, ne remedio opus eſſet, effecimus adhi-
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bito tympano O rotaque P: </
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>
<
s
xml:id
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echoid-s451
"
xml:space
="
preserve
">quibus hoc conſequimur, ut
<
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/>
quamlibet anguſtæ ſint penduli vibrationes, neque eo ſecius
<
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/>
axis M N, quantum neceſſe eſt, reciproco motu converta-
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tur. </
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<
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xml:space
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">Nam cum tympani O diametro dupla vel tripla pona-
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tur diameter rotæ P, ſequitur ut hujus exigua licet oſcilla-
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tione, illud tamen ſatis magnam circuitus partem abſolvat. </
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Sic igitur oſcillationibus univerſis exilioribus redditis, etiam-
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ſi harum aliæ alias latitudine quandoque excedant, ſingula-
<
lb
/>
rum tamen tempora, experientia teſte, nullo memorabili
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diſcrimine differunt. </
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xml:space
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">Qua ex re & </
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