Barrow, Isaac
,
Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur
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<
s
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<
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<
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<
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<
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munem utrinque adjiciendo rationem CK ad CA, erit CK. </
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<
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+ CA. </
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<
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xml:space
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<
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<
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<
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<
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CK. </
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<
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<
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<
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<
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<
s
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xml:space
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<
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<
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<
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<
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<
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xml:space
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131.</
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quod ſemel, brevitatis causâ, monitum efto.</
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<
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<
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<
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<
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<
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fractus N _a_ cum axe AC prorsùm excurrens conveniet. </
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<
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CK. </
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<
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<
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<
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<
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<
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<
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xml:space
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<
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<
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<
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<
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rallelus erit.</
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<
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<
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(CA. </
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<
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<
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<
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N Hipſius AN.</
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<
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<
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<
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retrò conveniet extractus.</
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<
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<
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<
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CK &</
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<
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<
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<
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<
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nes refractos verſus AC procurrentes convergere. </
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<
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ſemper AN &</
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<
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<
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<
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<
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res radios in ſenſibilem paralleliſmum refringi.</
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<
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<
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<
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nifeſtum eſt omnes refractos retrò protractos cum AC concurrere.
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<
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dentium refractos retrò productos, omnes autem arcui NT inciden-
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tium refractos antrorſum procurrentes axi occurrere.</
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<
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nempe I &</
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diverſitas, hanc quoqne breviter attingemus.</
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