Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. -
Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German. Mean line confidence on this page: 0.89.
Original at the GWLB · Page image · Annotations (IIIF) · Download text
The machine reads it as
- IF O V che Distanice olche Object from the Pole
- or Verrex of the Class, be caken instead et P
- chen will C O berhe Disserence oF O V al CR
- and as chac Difference is 10 C R, (0 is the lladius
- CV 1OC F che Distance ot the Pinspat locus
- Fromche Cenrre ot he sxliete, Wut ihe Citass
- is a Sepment.
- OF elle, aS CG) 1OO P OF R 9 :: S0 PC 10
- V F, ihie Focal Distance fron the Pole ot he CalS.
- Nhence Pollos a general Rule For the Foci ot
- all Glasses, only accordins 10 Cor. 3. it OV de
- excced CR, the Focus is on che lame side oF ine
- Olals, a5 is che Cenere oP ihe Sphere. Bur it C B
- begreater, chen che Focus is on the opposire Mide O
- che Glass; irhence ir will be derermined, wtiertier
- che Focus De Leal or tmaginari.
- OROLLRAY Vi
- Erhat has Been Caid OF one Surtace OF 2 Lens, i5
- easily applicable rorhe orher; ratine F, the FOcuS
- of the srst Surta ce as an Object, and utins icasO
- in rhe Figures For Fmergine Rays; Whereby che
- Focus oE borh Surtaces will be determined, 25 in
- 18
- AII which are dravon wich IHC (aME LereTS 1
- their respectire Points, only in Pome che PoinE L
- Fallins Car distanc, is ro be understood in the Incer-
- section oE che Line P F wichche AXis. e
- This chus demonstrated in che most disticule Ca-
- ses, Will gire all che Rules For the Foci oF Rays
- Parallel co che Axis, as likewise For che principal
- LOcus, Where che Rays nearest che Axis dounire:
- All which Rules are collected in chele followins
- Corollaries.
- COROLLAEY L
- IF OP DC equalto C R, chen che Poins C anc
- Care coincident, and che Rays OP alter Retra-
- ction, rum on Parallet e0 che Axis.
- COROLLARY II
- IEche Point C Fall on che Pame Side oF the Aris
- asis the Point P, then the Beams aster Retraction
- dorend on, cicher Dirergins or Convergins as bc.
- Fore: But if ( FaIl on the orher sde the AXIS, 25
- in Fis. I. che Divergins Rays are made 10 Con-
- verBC bY a COnVCK, OE CC Conversins 10 DiversC
- by a Concave Claso.
- COROLL ARY VI.
- IF OP. do exceed C R, che Focusis in aM C ases
- on the same sde OF the CtasS aS IS FHC CCHErC OF
- the Sphere C.
- Bur contrarimile, IF O P be lels chan C R, the
- Focus falls on the orter side ot the Citals berond
- che Verrex V.
- COROLLREE IV.
- An Objeet may be l0 placed, Thatthe AassCAL
- the Axis ot a Convex-ClaS, Mail have an Imagina-
- ry Focus, erantinierinq Divergins Rays, When chc
- mere remore Parrs chereot, Mall make chem COn.)
- rergeto 2 real FOcus.
Cite
Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. - . Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/806933011:0349?run=74