Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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Table of Notes
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CHRIST. HUGENII
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niam alias quoque vicinam illi animadverteram, ſimilique fe-
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re poſitu.</
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<
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xml:space
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">Porrò brachia Saturni recta quidem utrinque extenſa cer-
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">TAB. XLVII.
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fig. 6.</
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nebantur, ſed verſus extremas cuſpides craſſiora paulo quam
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qua parte Saturni diſco cohærebant, qualia ſequens ſchema
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exhibet.</
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<
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xml:space
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">Eâque formâ uſque ad occaſum Heliacum Saturnus perſtitit.
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<
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">Cæterum cum poſt phaſin rotundam Anni 1656 brachia
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denuo recepiſſet, eadem quidem illa forma reverſa eſt
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duodecempedali tubo ſpectanda: </
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<
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<
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fig. 6.</
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pedum adhibito alteram hanc figuram veriorem eſſe patuit;
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<
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">unde antea quoque talem extitiſſe credibile fiebat, quæ ta-
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men minori teleſcopio perfectè conſpici nequiiſſet. </
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<
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neam illam obſcuram, brachia utraque conjungentem, ac to-
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ta tamen infra ſe relinquentem, etiam 12 pedum teleſcopio
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notavimus.</
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<
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">Die ſequenti, nempe 26 Martii ſtella a eodem modo ea-
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fig. 7.</
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demque qua prius diſtantia juxta Saturnum collocata erat,
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b verò duplo quam ante remotior. </
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inter ſe ſtellularum a & </
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<
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utramque vel alteram ſaltem erraticam eſſe. </
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xml:space
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dem a neceſſario talem judicavi, quoniam Saturnum eo tem-
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pore retrogradum eſſe noveram; </
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turno illam in eandem plagam delatam eſſe, quum alioqui
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propinquior multo fieri debuiſſet. </
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nus fixa cenſeretur nihil obſtabat, imo prorſus ita exiſtima-
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ri conſentaneum erat, cum una die tantum ab illa Saturnus
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receſſiſſet, quantum motus ejus poſtulabat. </
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liter ſe rem habuiſſe ſequentes obſervationes oſtendunt.</
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XLVIII.
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fig. 1.</
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adhuc longius receſſerat.</
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fixam b non amplius annotavi, ſed ſtellula a migraverat ad Sa-
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turni latus Orientale, rurſuſque fere 3 ſcrupulis diſtabat. </
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ſervationes.</
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