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Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 85

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: 0.94.

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The machine reads it as

  1. P R OP. ZIX.
  2. I any sort of rays fallins on the polite surface of any
  3. pellucid medium be refected bacte, the fits of easus re-
  4. fexion rehich they have at the point of reflexion, palt
  5. stiu continue to return, and the returns sal be at di-
  6. stances from the point of reflexion in the arithmetical
  7. prooression of the numbers 2, 4, 6, 8, 10, 22, _C. and be-
  8. treeen these fits the rays sai be in fits of easy trans-
  9. mission.
  10. FOT CinCe thC AES OF casy rellexion and easy tran-
  11. mission are ot a returnins nature, there is no reason
  12. rtr chele Ats, irhich continued till the cay arrired at
  13. the reflectins medium, and there inclined the ray to
  14. reflexion, Bould there cease. And it the cay at the
  15. point ot reflexion ras in a ft ot casy resexion, the
  16. progression oF the distances ot thele tuts trom that point
  17. must besin From o, and (0 DC OF the numDerS O, 2,4,
  18. 6, 8, c. And theretore the prooression ot the di-
  19. sances of the intermediate AIS oF casY tran(missIOn ZCC
  20. koned From the lame point, must be in the progrestion
  21. oF the odd numbers 1, 3, 5,7, 9, Dc. Contrary towrtrat
  22. happens wrhen the Ats are propasated trom points et
  23. retraction.
  24. PROP. XZ.
  25. The intervals of the fits of easy reflexion and easis
  26. transmission, propasated from points of reflexion into any
  27. medium, are equal to the intervals of the litee fits rehict
  28. the same rays vould have, if refracteu into the same
  29. medium

Cite

Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 85. Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/1677894601:0261?run=74