Barrow, Isaac
,
Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur
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NR, RX; </
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<
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">& </
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<
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xml:space
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">incidentinm AN, AR, AX reflexi GN, HR, IX
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axi occurrant producti punctis K, L, M; </
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<
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xml:space
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">erit intervallum ML ab
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obliquiorum occurſibus concluſum majus ipſo LK rectiorum occurſi-
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bus intercepto.</
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<
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<
s
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xml:space
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<
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<
s
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xml:space
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">erit 2 ACq
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- ANq - AXq &</
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<
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<
s
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<
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xml:space
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">adeóque ACq -
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- AXq. </
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<
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<
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<
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</
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<
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CM. </
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<
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<
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<
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& </
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<
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Q E. </
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<
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">Hinc conſtat, etiam in hac hypotheſi, rectiùs incidentem
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lucem â reflectione magìs inſpiſſari; </
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ore conſtringi.</
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<
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(velut ad O) conſtituatur oculi centrum, quod punctum A neceſſa-
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<
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riò circa limitem Z apparebit. </
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quoad radios ab infinitè diſſito puncto manantes hypotheſi) ab axis
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illi puncto adjacente parte radii cùm copioſiores, tum axi viciniores,
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oculóque rectiores, efficaciâ proinde præpollentes, nec non qui
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faciliùs re-adunentur, provenire videntur. </
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ac emergentem propoſiti conſequentiam abunde, puto, dedimus
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enucleata. </
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axem collocato itidem imaginis ſedem definiamus. </
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<
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quanquam haud ità quantitate multa , pro rei tamen obſcuritate for-
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taſſis nimia videbuntur. </
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