746346

Index T

rallatuum~

'64.

Imagi11e111 11011 continuam ita refon11t1re

11t per

tttb11mjpec1ata appareat continua.

724

6). .

Modtu 11111/tipltcandorum colormn iridis,1111t ampl1-

fica11donm1.

725

66. De rerum i111,1ginib1u

i11

c11bic11/o c/a11fo apparcn-

t1b1u.

•

ibid.

OO·Q!1f!f1!l:flljlllj¡j!l!ll.lft·ll1.lll1.l!fll!ll:!Nlml®·ml!Zemll11l!fll1Jll

DISGRESSIO MECHAN,ICA

Mechodus elaborandornm fpecillomm.

PRÓP.

Qui

difli

1.mm

elaborandis convexis

lentibus req11ira11rur.

726

z. Qf!omodo elaborand" lentes objcéli1•"·

728

Q!!_omodo elaborand« lentes oc11/arcs co11vcx«. 729

Q!!_omodo e/abor,md.1 JPecilla co11cava.

730

MenifttmJ dabor11re.

731

6. Modus perjeflior e!aborand& lentis objec1iv«.

ibid.

!tí!llllllfl®ií.!l®ll:!l

!1.íl

@l@!1.í)!Zfl!1!211!1Q!1!1.ílll.!

i.ll.

!ll1:!i'~!lli

O P T R I C E S.

LIBER III.

D e loco imaginis,

refraél:ionibus

coloraris.

I'Ro'P.

0Bjell11m i11 aqua ab 11rroq11e oc11/o re–

fraélC J)eélat1tm vidctt/Y in catheto,

a11t non longe.

733

z. Si 11terq11e oc11/us fuerit in eadem ji1perficie refrin–

gente, poterit fieri ut objcc111m 11pp.ire11t extra

perpendic11/arem d1tc1.1111 ab ipfo ad comm1111cm

utri11(q11e diaphaniji1perficiem.

ibid.

Baculus media parte

fiti,

in acre,

alia in aqtta

exiflens

ji jit adJi1perficiem aqll"- relllls

com-

11111nirer appareb1t rellus , licet pars qtt« in aqtta

cjl brevior appareat.

734

4-·

Baettltts obligue in aquam immerfi" videt11r non

conjlmere unam reéfam lineam , c11m parte extra

aq11am pofira.

ibid.

1!ll!li:!ll1.l1Jl!1Jll·ll1.l1Jll

f}f).¡¡:(j@~.m¡~ll1.l!llillli!ll!OOOO!!e

' SUPPOSITIO

Ad naruram refraélionum coloratormn

. explicandam.

DtGRESs10

I.E Xperienti.t varu circa colores appa-

Phyfica.

rentes.

736

z. Q!!id ji11t colores appare11tcs.

738

PRor.

prifi11ate tri1111g11tari, ad magnam dijl1111-

tiam vividiores a¡parent colores, quam ad par-

vam.

743

z. Si partemfaciei prifmatisvitrei regas corpore opa–

co in longum porreflo

in parvá dijlantia repe–

tetur bis, atlf ter idem ordo co/0111111, in 111a.

gna 1111icus erit ordo.

744

3·

Gener1111t11r per prifo1a rria11g11tare colores appa·

rentes

11011 fac1111d1lm aliq11ai11 i>1clinatío1ie1;1

conftjfenrem

111

al1quo gradtt

fad

111<1~1~ut

ettam l11tit11di11e.

1b1d.

Q!!_omodo fe Í1.1bea11t radii rranfi11ijfi per

trig~m~m

in l"ll'lts mclmationzb11s.

1b1d.

Color dererminllns 11011 jibi vendicat derermi1111r11m

1111g11lu111.

745

6. <J.!!.ilibet rtldius derermin.1t11r

vici11if, ut pottHs

1m111n colorem exhibeat, quam a/mm.

74-5

7, Objella ill11flria[.ttu magna non apparent colorata,

nifi in exrrcmttatibus

aut

medio ji11t a/¡4ua

11mbra.

746

Sing11/i ordi11es

luce pura

ad limbum (ive

rtt•

beum ,Jive

c.tm/«

11111, non oblinmt dimtdiatum

gradum.

741

9. si objelt11111 il/ujlre tra111 rrigo1111111 virre11m ,j}e{f,1-

tum

varm

11múris 111tcrr11mp11tur,

color mbem

fingulü e,mdempartcm olmnebit.

ibid.

10,

Radti color11ti le11re concava cxcepti dilat.mt11r,len·

re poiyoptra jépara11tt1r, rcrinentqtre

fi111m

colo–

rem, leme ¡1erO convexa íu

ipfo

foco ji111m am1t–

t1mt colorem

e11mq11e pojl foc1m1 rec11pera11t.

ibid.

De Jride.

748

Radii fo/ares i11.<q11aliter dijperg1mrnr área a11g11-

/11m gr11d.41.

mi11.3 0.

749

12.

R.1dii fo/ares cirta a/ios a11g11los, pr.trer circ.i a11-

g11l11m grad11111n

dtj}erguntur «qualirer pofl

1111icamrcfiexio11em

dupltcem refraél1011em.750

13.

Pojl d11plicem

i11

/}h<trtt aquea refraél1011em,

re–

fiexionem, r.1di11s folari< circa ang1tl11111

dif

pcrgitur i11.t.q11alirer

circa reliquos «q11alirer.

ibid.

14 .

Radim falaris pofl d11plice111

i11

guttá jph.t.rica re–

fi"aElio11em fine u/la reflex1011c, colores irid" re–

pr.tfentnt czrca angulttm gr11d11u111

23.

751

15.

si g11rta/}h.trica[ole ill11jlret11r rres

ejf1111~t

fuper-

ficier conicM co/oratM.

752

16,

So/e lucc11te

mimls quam grad.4 1. elevaro

pluat

tri<

11ecefferi~

apparet ad fe11fi1m circula

ris.

753

17.

Iris 11011 oritt/Y ex nubis aliCtgus tora/is refi"aElio11e.

18.

.JJ;tbet oc1tl1tsJi1am jibi pecztliarem i11 rorida nube

mdem ve11dicar.

755

19.

Licet iris femper circttlaris appnreat,

•

realiter ra–

mell fape hyperbo/ica, parabolica ellyptica

ejl.

756

zo. Iris fec1111dari11

reflexione primari.t. non gene-

ratt1r.

ibid.

ZI.

De Coronis.

757

2z.. Coron.t lttcernamm i11 ipfis oculis efforma11t11r.

758.

23.

Paretiis.

759

z4.

De Vírgis.

760

z5. Pojfimr írides

effe

exrraordinari.t.

761

26. Cur fo! prope

hori~ntem

major

ovali figu·

ra apparear.

ibid.

z7. De crepuflulo

aurora.

762

28,

Determinare afrirudinem at!nnoj}b.,r.t

ex dur;1-

lio11e ¡¡uror.t,

crep11ft11li:

ibid.

TRACTA