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

Table of contents

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[61.] _Probl_. IV.
[62.] _Probl_. V.
[63.] _Probl_. VI.
[64.] _Probl_. VII
[65.] _Probl_. VIII.
[66.] _Probl_. IX.
[67.] _Probl_. X.
[68.] _Corol. Theor_. I.
[69.] _Theor_. II.
[70.] _Theor_. III.
[71.] _Theor_. IV.
[72.] _Theor_. V.
[73.] _Theor_. VI.
[74.] _Theor_. VII.
[75.] Lect. XIII.
[76.] Æquationum Series prima.
[77.] _Notetur autem_,
[78.] Series ſecunda.
[79.] Not.
[80.] Series tertia.
[81.] Not.
[82.] Not.
[83.] Series quarta.
[84.] Not.
[85.] Series quinta.
[86.] Series ſexta.
[87.] Not.
[88.] Series ſeptima.
[89.] Not.
[90.] Series octava.
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page |< < (21) of 393 > >|
3921 cujuſcunque generis ſcientia, qualitercunque declarare ſtuduimus, &
è principiis admodum affinibus elicere;
modo, meâ ſententiâ ſaltem,
omnium qui legenti ſe vel cogitanti ſuggeſſerunt, ſimillimo veri, cúm-
que tam rationibus Mechanicis, quàm experimentis Phyſicis, &
cùm
ipſa rerum natura congruentiſſimo.
Neque nulla mihi tunc oborieba-
tur voluptas, cùm poſtquam inter alios iſta lucis ſymptomata expli-
candi modos hic ipſe ſemet ingeſſerat, eum examini ſubjiciens, Geo-
metriæ legibus (aliquanto ſanè præter expectationem) adeo quadran-
tem comperiſſem.
Meæ tamen eum tam fuſe4; diducendi peperciffem
operæ, ſi quæ doctiſſimus _Maignanus_ hiſce conformia, luculentius
quidem opinor &
accuratius, pertractavit, priuſquam hæc aggrederer
contigiſſet inſpexiſſe;
penes quem extare multa nil dubitem (nec enim
eum adhuc curioſiùs evolvi) ſupplendis his, &
confirmandis accommo-
data.
Porro fuit etiam animus, alias, quæ plurimæ traduntur, horum
rationes percenſere, ac perſtringere (quarum mihi nonnullæ craſſâ
petitione laborare;
multùm aliæ à re propoſita abludere; quædam
animum ſubtilitate potius confundere, quàm vi conſtringere videban-
tur) verùm etiam huic exponendæ nimiſquam immoratus, hactenus in-
ſinuatis contentus, omnes tranſiliam;
illius ſaltem eruditiſſimi viri
nefas fuerit non aſtipulari penitus, &
acquieſcere decreto; “qui, De-
"um unicum &
Optimum Naturæ Architectum, hanc (ait) legem ra-
"diis diverſa media permeantibus præſcripſiſſe;
ut omnes omnino
"radii veri, &
apparentes eandem ſemper inter ſe ſervent analogiam.
His, inquam, dimiſſis, ſuccedit ut è præſtructis emanantia quædam
Poriſmata ſubnectamus.

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