Barrow, Isaac
,
Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur
Text
Text Image
Image
XML
Thumbnail overview
Document information
None
Concordance
Notes
Handwritten
Figures
Content
Thumbnails
Page concordance
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 393
>
Scan
Original
11
12
13
14
15
16
17
18
19
1
20
2
21
3
22
4
23
5
24
6
25
7
26
8
27
9
28
10
29
11
30
12
31
13
32
14
33
15
34
16
35
17
36
18
37
19
38
20
39
21
40
22
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 393
>
page
|<
<
of 393
>
>|
<
echo
version
="
1.0RC
">
<
text
xml:lang
="
la
"
type
="
free
">
<
div
xml:id
="
echoid-div8
"
type
="
section
"
level
="
1
"
n
="
8
">
<
p
>
<
s
xml:id
="
echoid-s73
"
xml:space
="
preserve
">
<
pb
file
="
0016
"
n
="
16
"
rhead
="
"/>
quædam _Tbeoremata_ derivo, partim ab aliis agnita (quæ
<
lb
/>
methodi gratiâ, & </
s
>
<
s
xml:id
="
echoid-s74
"
xml:space
="
preserve
">propter aliorum probationem, meis de-
<
lb
/>
monſtrationibus firmata appono) partim à me obſervata.
<
lb
/>
</
s
>
<
s
xml:id
="
echoid-s75
"
xml:space
="
preserve
">deinad ſpecialia progredior, id mihi negotii ſumens, ut
<
lb
/>
_Catoptricæ_, ac _Dioptricæ_ utriuſque, in uſu maximè poſitæ
<
lb
/>
(_planæ ſcilicet & </
s
>
<
s
xml:id
="
echoid-s76
"
xml:space
="
preserve
">spbæricæ_) potiſſima pertractem _In_
<
lb
/>
_Catoptrica spbærica_ (ſiquidem plana jam olim verè ſatìs,
<
lb
/>
ac fusè exculta habetur) ejuſmodi _Tbeoremata_ propono,
<
lb
/>
de quibus reflexorum radiorum interſectiones atque limi-
<
lb
/>
tes innoteſcunt; </
s
>
<
s
xml:id
="
echoid-s77
"
xml:space
="
preserve
">unáque punctorum tam à longè, quàm è
<
lb
/>
propinquo radiantium imagines, & </
s
>
<
s
xml:id
="
echoid-s78
"
xml:space
="
preserve
">apparentes loci deter-
<
lb
/>
minantur; </
s
>
<
s
xml:id
="
echoid-s79
"
xml:space
="
preserve
">reſpectu oculi nedum in radiationis axe, ſed
<
lb
/>
extra ipſum ubicunque conſtituti. </
s
>
<
s
xml:id
="
echoid-s80
"
xml:space
="
preserve
">quæ certè vel nuſquam
<
lb
/>
(quod ſciam) aut magnâ ex parte perperàm alibi tractata
<
lb
/>
proſtant; </
s
>
<
s
xml:id
="
echoid-s81
"
xml:space
="
preserve
">id quod, incidentèr aliorum refutans ſententias,
<
lb
/>
cùm ratiociniis perſpicuis, tum experimentis decretoriis
<
lb
/>
evictum eo. </
s
>
<
s
xml:id
="
echoid-s82
"
xml:space
="
preserve
">_Dioptricam_ porrò tam _planam quàm Spbæ_-
<
lb
/>
_ricam_, refractionis noviſſimâ præſtratâ lege vel hypotheſi
<
lb
/>
(quam _illustris Carteſius_ detexit, at plerique, reor, melio-
<
lb
/>
res _Optici_ jam amplexantur; </
s
>
<
s
xml:id
="
echoid-s83
"
xml:space
="
preserve
">quam & </
s
>
<
s
xml:id
="
echoid-s84
"
xml:space
="
preserve
">propter aſſignatas
<
lb
/>
alicubi rationes veritati conſonam judico) velut à funda-
<
lb
/>
mentis extruo. </
s
>
<
s
xml:id
="
echoid-s85
"
xml:space
="
preserve
">nec enim eorum, qui principium illud ad-
<
lb
/>
miſerunt, ipſum hactenus quiſquam (in ſcriptis intelligo
<
lb
/>
quæ viderim luci commendatis) huc applicuit. </
s
>
<
s
xml:id
="
echoid-s86
"
xml:space
="
preserve
">Hîc au-
<
lb
/>
tem imprimìs puncta radiantia longè diſſita (ſeu quaſi
<
lb
/>
parallelos emittentia radios) conſiderans, quo pacto ab
<
lb
/>
ipſis proſluentes radii detorquentur exquiro, _Tbeoremata_
<
lb
/>
quædam eliciens, è quibus præcipua _refractorum ſympto_-
<
lb
/>
_mata_ liquent, ipſorum interſectiones ac limites dignoſcun-
<
lb
/>
tur; </
s
>
<
s
xml:id
="
echoid-s87
"
xml:space
="
preserve
">apparentia denique punctorum objectorum loca de-
<
lb
/>
ſignantur, tam oculi reſpectu qui in axe, quàm ejus qui
<
lb
/>
uſpiam extra axem collocatur. </
s
>
<
s
xml:id
="
echoid-s88
"
xml:space
="
preserve
">tunc eadem attento quoad
<
lb
/>
puncta ſenſibiliter vicina, ſeu divergentibus radiis allu-
<
lb
/>
centia. </
s
>
<
s
xml:id
="
echoid-s89
"
xml:space
="
preserve
">ſub extremum, quò paratior ſit horum </
s
>
</
p
>
</
div
>
</
text
>
</
echo
>