Search the Nachlass

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

  1. IF O V che Distanice olche Object from the Pole
  2. or Verrex of the Class, be caken instead et P
  3. chen will C O berhe Disserence oF O V al CR
  4. and as chac Difference is 10 C R, (0 is the lladius
  5. CV 1OC F che Distance ot the Pinspat locus
  6. Fromche Cenrre ot he sxliete, Wut ihe Citass
  7. is a Sepment.
  8. OF elle, aS CG) 1OO P OF R 9 :: S0 PC 10
  9. V F, ihie Focal Distance fron the Pole ot he CalS.
  10. Nhence Pollos a general Rule For the Foci ot
  11. all Glasses, only accordins 10 Cor. 3. it OV de
  12. excced CR, the Focus is on che lame side oF ine
  13. Olals, a5 is che Cenere oP ihe Sphere. Bur it C B
  14. begreater, chen che Focus is on the opposire Mide O
  15. che Glass; irhence ir will be derermined, wtiertier
  16. che Focus De Leal or tmaginari.
  17. OROLLRAY Vi
  18. Erhat has Been Caid OF one Surtace OF 2 Lens, i5
  19. easily applicable rorhe orher; ratine F, the FOcuS
  20. of the srst Surta ce as an Object, and utins icasO
  21. in rhe Figures For Fmergine Rays; Whereby che
  22. Focus oE borh Surtaces will be determined, 25 in
  23. 18
  24. AII which are dravon wich IHC (aME LereTS 1
  25. their respectire Points, only in Pome che PoinE L
  26. Fallins Car distanc, is ro be understood in the Incer-
  27. section oE che Line P F wichche AXis. e
  28. This chus demonstrated in che most disticule Ca-
  29. ses, Will gire all che Rules For the Foci oF Rays
  30. Parallel co che Axis, as likewise For che principal
  31. LOcus, Where che Rays nearest che Axis dounire:
  32. All which Rules are collected in chele followins
  33. Corollaries.
  34. COROLLAEY L
  35. IF OP DC equalto C R, chen che Poins C anc
  36. Care coincident, and che Rays OP alter Retra-
  37. ction, rum on Parallet e0 che Axis.
  38. COROLLARY II
  39. IEche Point C Fall on che Pame Side oF the Aris
  40. asis the Point P, then the Beams aster Retraction
  41. dorend on, cicher Dirergins or Convergins as bc.
  42. Fore: But if ( FaIl on the orher sde the AXIS, 25
  43. in Fis. I. che Divergins Rays are made 10 Con-
  44. verBC bY a COnVCK, OE CC Conversins 10 DiversC
  45. by a Concave Claso.
  46. COROLL ARY VI.
  47. IF OP. do exceed C R, che Focusis in aM C ases
  48. on the same sde OF the CtasS aS IS FHC CCHErC OF
  49. the Sphere C.
  50. Bur contrarimile, IF O P be lels chan C R, the
  51. Focus falls on the orter side ot the Citals berond
  52. che Verrex V.
  53. COROLLREE IV.
  54. An Objeet may be l0 placed, Thatthe AassCAL
  55. the Axis ot a Convex-ClaS, Mail have an Imagina-
  56. ry Focus, erantinierinq Divergins Rays, When chc
  57. mere remore Parrs chereot, Mall make chem COn.)
  58. 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