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Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 75

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: 0.91.

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The machine reads it as

  1. mighe Telescopes be broughe eo sufticient perfection, wereit
  2. noc For chedifferent retransibilier of sererallors oF RayS. BUE
  3. by realon oFchis different retransibilier, I do noc rec lec any
  4. Ocher means of improvins Pelescopes by Retractions alonc
  5. chan chac ot increasine cheir lenechs, For which end che late
  6. contrirance oF FIurenius seems well accommodated. FOr
  7. very lons Tubes are cumbersome, and scarce to be readily
  8. managed, and by reason ot cheir Length arC VerY apE EO
  9. bend, and Phake by bendins (o as to cause a continual
  10. cremblins in che Objects, whereby ic becomes difticule t0
  11. lec them distinctlr: Wrhereas by his contrirance che Clastes
  12. are readily manascable, and che Object. Clals beins fxc uP-
  13. On a srong upriehe Pole becomes more ceddr.
  14. Sccins cheretore che improvement of lelescopes of siven
  15. lenochs by Retractions is desperare; I contrired herecotore a
  16. Perspectire by reflexion, uling instead of an Object Olals
  17. 2 concare Metal. The diameter of the Sphere eo which
  18. the Mecaliras ground concare as about 25 Englichr Inches,
  19. and by consequence che lenoch of che Instrumene abOue sIX
  20. Inches and a gnarter. The Eye-Olals was plano- COnVeK,
  21. and che Diamerer of the Sphere eo which the conrex side Was
  22. oround as aboue : OF an Inch, or a licele less, and by con-
  23. sequence ic magnihed between z0 and +o times. BY ano-
  24. cher ray ot meaturins l Found chac ic magnitied aboue
  25. 25 cimes. The Concare Nletal bore an aperture ot an Inch
  26. and a chird pare; buc che aperture ras limired noc by an
  27. opakce Circle, corerins the Limb of the Necal round abouL,
  28. but by an opalce circle placed becween the Fye- Clals and che
  29. Fre, and pertorated in the micdle wich a licele round hole
  30. For che Rars co pass chrough co the Fyc. For chis Circle
  31. by being placed here, sope much ot che erroneous Lighe,
  32. Wrhich ocherrise rould have disturbed che Vision. BY com-
  33. Parins ic wich a pretey 800d Perspectire of Four Feer in
  34. 2 2
  35. lenseh,

Cite

Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 75. Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/1677894601:0085?run=74