Barrow, Isaac, Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur

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23744
Cùm enim _circulus centro_ H per M deſcriptus _curvam_ intròrſum
11Fig. 37. tangat, etiam magìs _circulus centro_ I _deſcriptus_ introrſum tangat.
un-
de
liquet.
Cùm enim _Circulus Centro_ H _per_ M _deſcriptus curvam_ extrorſum
contingat
, etiam potiori jure _Circulus Centro_ I _per_ M _deſcriptus eandem_
22_Apoll. V._ 39. _exirorſus continget_.
unde conſtat _Propoſitum_.
De hac autem Tabula jam manum auferemus; nec enim impræſen-
tiarum
hujuſmodi pleraq;
complecti profitemur. Inſtituto noſtro ſuffi-
cit
hactenus generalis cujuſdam curvarum proprietates comprehenden-
tis
Doctrinæ _ſpecimen_ exhibuiſſe:
qualis certè, plenior & perfectior,
_baud
exiguum videtur rebus Geometricis_ (quæ nempe circa _curvaruns_
_proprietates
&
affectiones_ plurimùm occupàntur) _compendiuns allat@-_
_ra_
.
dicam culpæ agnatum videri, _Logicæ{q́ue}_ Regulis haud admodum
congruere
, quæ toti cuipiam generi conveniunt, &
quæ de communi
quadam
origine manant, ea quibuſdam partibus adſcribere, vel ex an-
guſtiorifonte
derivare.
_Plura_ forſan, & _abſtruſiora_ proferemus ali-
quando
.
Nunc his ſuperſedemus.

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