Bošković, Ruđer Josip
,
Theoria philosophiae naturalis redacta ad unicam legem virium in natura existentium
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niunt prorſus in media diſpoſitione, fieri utique poterit, ut ra-
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tio reflexorum ad transmiſſos ſit admodum diverſa in diverſis
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circumſtantiis, nimirum diverſi mediorum diſcriminis, vel
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diverſæ inclinationis in acceſſu: </
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<
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">ubi enim inæqualitas virium
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eſt minor, vel major perpendicularis velocitas per illam ex-
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tinguenda ad habendam reflexionem, non reflectentur, niſi il-
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læ particulæ, quæ advenerint in diſpoſitione illi mediæ quam-
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proxima, adeoque multo pauciores, quam ubi vel inæqualitas
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virium eſt major, vel velocitas perpendicularis eſt minor, un-
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de fiet, ut quemadmodum experimur, quo minus eſt medio-
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rum diſcrimen, vel major incidentiæ angulus, eo minor ra-
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diorum copia reflectetur: </
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<
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<
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quod ubi in continuo flexu curvaturæ viæ particulæ cujuſvis,
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quæ via jam in alteram plagam eſt cava, jam in alteram, pro-
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ut prævalent attractiones denſioris medii, vel repulſiones, de-
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venitur identidem ad poſitionem fere parallelam ſuperficiei di-
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rimenti media, velocitate perpendiculari fere extincta, exi-
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guum diſcrimen virium poteſt determinare paralleliſmum i-
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pſum, ſive illius perpendicularis velocitatis extinctionem tota-
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lem: </
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<
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">quanquam eo veluti anfractu ſuperato, ubi demum re-
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ditur ad planum citerius in reflexione, vel ulterius in refra-
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ctione, ſumma omnium actionum, quæ determinat velocita-
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tem perpendicularem totalem, debeat eſſe ad ſenſum eadem,
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nimirum nihil mutata ad ſenſum ab exigua illa differentia vi-
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rium, quam peperit exiguum diſpoſitionis diſcrimen a media
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diſpoſitione.</
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<
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<
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men in inter-
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vallis vicium.</
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crimen inter binas vices, ſed ſupereſt exponendum, unde diſ-
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crimen intervalli vicium, quod propoſuimus num. </
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diverſi colorati radii diverſa habeant intervalla, nil mirum eſt:
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<
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inter vices oppoſitas, quando etiam eæ vices redeant æqualibus
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temporis intervallis, & </
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textus requirit diverſa oſcillationum tempora. </
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<
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ſis mediis particulæ ejuſdem generis habeant diverſa intervalla,
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itidem facile colligitur ex diverſa velocitate, quam in iis ha-
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beri poſt refractionem oſtendimus num. </
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<
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ipſa mediorum mutatione inæqualis actio inter puncta parti-
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culam componentia poteſt utique, & </
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<
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re oſcillationis magnitudinem, & </
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<
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tare, adeoque celeritatem oſcillationis ipſius. </
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<
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di mutatio pro diverſa inclinatione viæ particulæ advenientis
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ad ſuperficiem, diverſa utique eſſe debet, ob diverſam poſi-
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tionem motuum punctorum ad ſuperficiem ipſam, & </
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ſam agentem in ipſa puncta. </
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<
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tres cauſas debere diſcrimen aliquod exhibere inter diverſa in-
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tervalla, uti reapſe ex obſervatione colligitur.</
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<
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