Bošković, Ruđer Josip
,
Theoria philosophiae naturalis redacta ad unicam legem virium in natura existentium
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vis, qua ipſum retinetur in eo vertice, eſſe admodum ingens
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pro utcunque exigua dimotione ab eo loco, ut ſine ingenti ex-
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terna vi inde magis dimoveri non poſſit. </
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<
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impediat motum puncti B, & </
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<
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ctum A, ut in fig. </
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<
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E', ut ſervetur forma trianguli AE B, quam neceſſario requi-
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rit conſervatio diſtantiarum, ſive laterum inducta a limitum va-
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liditate, & </
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<
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">in qua ſola poterit reſpective quieſcere ſyſtema, ac
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habebitur idea quædam ſoliditatis cujus & </
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tio. </
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<
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res externas, quæ eorum motum impediant, vis aliqua exercea-
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tur in E ad ipſum a ſua poſitione deturbandum; </
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<
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mediocris, dimovebit illud non nihil; </
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<
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ſe reſtituet, & </
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metrum curvæ cujuſdam proximæ arcui elliptico. </
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<
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jor fuerit vis externa dimovens, eo major oſcillatio fiet; </
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ſi non fuerit tanta, ut punctum a vertice axis conjugati rece-
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dens deveniat ad verticem axis transverſi; </
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reflectetur, & </
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">deſcribetur minus, quam ſemiellipſis. </
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vis externa coegerit percurrere totum quadrantem, & </
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ultra verticem axis transverſi; </
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<
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">tum vero gyrabit punctum cir-
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cumquaque per totam perimetrum motu continuo, quem a
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vertice axis conjugati ad verticem transverſi retardabit, tum
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ab hoc ad verticem conjugati accelerabit, & </
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<
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">ita porro, nec
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ſiſtetur periodicus converſionis motus, niſi exteriorum puncto-
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rum impedimentis occurrentibus, quæ ſenſim celeritatem immi-
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nuant, & </
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<
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">poſt ipſos ejuſmodi motus periodicos per totum am-
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bitum reducant meras oſcillationes, quas contrahant, & </
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nam debitam poſitionem reſtituant, in qua una haberi poteſt
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quies reſpectiva. </
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<
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">An non ejuſmodi aliquid accidit, ubi ſolida
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corpora, quorum partes certam poſitionem ſervant ad ſe invi-
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cem, ingenti agitatione accepta ab igneis particulis liqueſcunt,
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tum iterum refrigeſcentes, agitatione ſenſim ceſſante per vires,
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quibus igneæ particulæ emittuntur, & </
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<
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">evolant, poſitionem prio-
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rem recuperant, ac tenaciſſime iterum ſervant, & </
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<
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<
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hæc de trium punctorum ſyſtemate hucuſque dicta ſint ſatis.</
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<
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<
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xml:space
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">Syſtema pun-
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ctorum qua-
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tuor, in eodem
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plano cum di-
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ſtantiis limi-
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tum, ſuæ for-
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mæ tenax.</
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ta multo plures nobis variationes objicerent; </
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<
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">ſi rite ad examen
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vocarentur; </
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<
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<
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">Ea quidem in plano
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eodem poſſunt poſitionem mutuam tueri tenaciſſime; </
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<
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lorum diſtantiæ a reliquis æquentur diſtantiis limitum ſatis va-
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lidorum figuræ 1: </
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<
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ſpectivam mutare poſſunt, aut aliquod ex iis exire e plano du-
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cto per reliqua tria, niſi mutet diſtantiam ab aliquo e reliquis,
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cum datis trium punctorum diſtantiis mutuis detur triangulum,
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quod conſtituere debent, tum datis diſtantiis quarti a duobus
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detur itidem ejus poſitio reſpectu eorum in eodem plano, & </
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detur diſtantia ab eorum tertio, quæ, ſi id punctum exeat </
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