Barrow, Isaac
,
Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur
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bini, eodem ordine ſibi reſpondentes, termini (puta D, Fin prima, & </
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P, R in ſecunda) erit A -: </
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A. # B. # C. # D. # E. # F.
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M. # N. # O. # P. # Q. # R.
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<
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xml:space
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ri N, M, quales in præcedente deſignati ſunt.</
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<
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xml:space
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nentes, aut Indices vocantur, in ſerie quavis proportionalium; </
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nos ſemper in ſequentibus intelligimus, ubi literas has adhibemus.</
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<
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tionalia Arithmeticè; </
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cipientia, Geometricè proportionalia; </
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tem illorum ſecundum B non majus horum ſe-
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cundo M; </
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majus eo, quod ipſi coordinatur in ſerie Arith-
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metica.</
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<
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<
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B + D = A + E. </
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&</
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velis.</
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<
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minus ultimo Q; </
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Q contra hypotheſin.</
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tramque ſeriem invertendo) ſin F &</
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<
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E &</
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metica majus eſt coordinato quolibet in ſerie Geometrica; </
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<
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majus eſt quàm N.</
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