Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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MATHEMATICA. LIB. III. CAP. VIII.
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trent, & </
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<
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quamcunque in aquâ.</
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<
s
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xml:space
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">Ex hucuſque dictis, quæ in motu radiorum contrario ob
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tinent facile determinamus ; </
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<
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xml:space
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">id eſt, motum radiorum
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medio denſiori in rarius, manente ſuperficie convexâ ad par-
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tem medii rarioris.</
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<
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<
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<
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radiante manantes, & </
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contra .</
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<
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infinitam detur, id eſt, ut radii refracti paralleli ſint. </
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</
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tes ſunt; </
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">minus divergentes quam incidentes, ſi punctum
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radians magis diſtet à ſuperficie quàm centrum .</
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trum, radii refracti magis divergentes erunt .</
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<
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<
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convergentes, quod ex refractione a perpendiculari
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tur, & </
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<
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intrare, cavitatem autem ſuperficiei ſphæricæ ES, media ſe-
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fig. 3.</
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parantis, dari ad partem medii rarioris. </
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paralleli, ut BO, A n; </
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ES tranſit, nullam patitur refractionem; </
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pendicularem C p per n G refringitur , & </
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nuatus interſecat BCO in f, quod etiam reſpectu radio-
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rum inter BO & </
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gentes, hàbentes focum imaginarium f in medio rariori.</
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6.</
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fig. 4.</
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fert, quod vitrum V, habeat cavitatem ad partem aëris, de
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cætero pixis P à prima pixide non differt; </
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dii, ex quibus radius cylindricus conſtat, in aquâ diſpergun-
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tur.</
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<
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nuitur angulus incidentiæ A n C, & </
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fig. 3.</
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