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Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 28

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: 0.93.

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The machine reads it as

  1. I considered Furcher chac by che breadch ot the hole F
  2. chrouoh wrhich che Lighe enters into the Darke Chamber,
  3. there is a Penumbra made in che circuie ot che Spectrum
  4. T, and chac Penumbra remains in the rectilinear Sides ot
  5. the Spectrums P Pand pt. I placed cheretore ac char hole
  6. 2 Lens or Object. glals ot a l’elelcope itich miohe cast
  7. che Image ot the sun distinetly on Y wichout any Penum-
  8. bra ac aIl, and Found chac che Penumbra ot the Rectili-
  9. near Sides oF the oblons Spectrums P T and pt vas allo
  10. cherebr cakcen arar, (o chac chole Sides appcared as di-
  11. Rinctir detired as did che Circumterence ot the trst Imaoe
  12. Y. Thus ic happens it che Olass of the Prilms be free
  13. trom veins, acd cheir Sides be accuratetr plane and vell
  14. polished wichoue chole numberlels vares or curles irtrich
  15. ulually arise trom Sand holes a licele smoothed in polist-
  16. ino wich PuteY. IE ehe Class be ouly well polished and
  17. Frec trom reins and che sides noc accurarely plane bue a
  18. licele Conrex or Concare, 25 ic trequeney happens; rec
  19. may chethrec Spectrums Y, P I and pt manc Penumbras,
  20. buc noc in equal distances trom che Prisms. No From
  21. this mane et Penumbras, Ikneu more certainty chac every
  22. one ot the circles as retracted accordine co lome most
  23. regular, uniform, and constane lar. For il chere ivere
  24. any irregularier in cheRetraction, che riohe Lines AC and
  25. OL irhrich all che circles in the spectrum P Y do touch.
  26. could noc br chac Retraction be translaced into che Lines
  27. ae and el as dictinet and sraiohe as they vere betore, buc
  28. chere mould arise in chose cranslated Lines Lome Penubra
  29. or croolcednels or undulation, or ocher sensible Percurba-
  30. eion contrary ro whac is tound by Experience. Whaclo-
  31. ever Penumbra or Percurbation Bould be made in che
  32. circles by the cross Retraction ot the sccond Pris, aII
  33. that Penumbra ox Perturbation rould De conspicuous in
  34. che

Cite

Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 28. Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/1677894601:0038?run=74