Barrow, Isaac
,
Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur
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= _n_
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- _a_
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= _n_
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, &</
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<
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<
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- _ba_
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- _ccaa_ = _n_
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. </
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<
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<
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diculari ſit AC = _c_; </
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<
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<
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ſecans ad ξ; </
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lum DSB deſcribatur _byperbola_ KYHK; </
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AMHMμ, ANHNν tales, ut inter AG, GK ſint _media_ GL, _bime-_-
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_dia_ GM, _trimedia_ GN; </
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liquæ verò HLλ, HMμ, HN@, ad nonam.</
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