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Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 58

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. N
  2. perpendicular ones arC N CO and FF CF. And is che
  3. Force of the retracting Plane begins to act uxon che RaYS
  4. cicher in chac Plane or ac a certain distance from ic on the
  5. one side, and ends at a certain distance from ic on the
  6. ocher side, and in alI places becireen those erro Limits acts
  7. upon che Rays in Lines perpendicular ro chat ratractine
  8. Plane, and che Actions upon the Rars ac equal distances
  9. From che retracting Plane be cqual, and ac unequal ones ei-
  10. cher equal or unequal accordins to any rate Whaterer:
  11. chac motion of che Ray irhich is Parallel to che retractine
  12. Plane wrill sutter no alteration by chac force; and thatmo-
  13. cion irhich is perpendicular eo ir rill be alcered accordino
  14. eo che rule oF the Foregoins Proposition. IF cheretore FOF
  15. che perpendicular Velocier of che emergins Rar CNY vou
  16. MC
  17. irrite p CC as abore, chen che perpendicular Velocier
  18. AD
  19. ot any ocher emereins Ray CF which was FF CF, will be
  20. equal eo the (Guare ROOC OF CD9 -
  21. NC. 9
  22. NOq C69. And
  23. by Cquarins chese equals, and adding eo them the Equals
  24. ADgandNICg---CD9. and dividing che summs by che
  25. Equals CFg F F Fg and CC9 ] NCG, You wil have
  26. ADC
  27. MICq
  28. EFq equal EO NOg. Whence AD, the Sine ot Incidence,
  29. is EO F. F the Sinc oF Retraction, as NC eO NO, thac is.
  30. in 2 siren ratio. And ehis Demonstration being general.
  31. richour decermining irhiat Lighic is, or by whac kind ot
  32. Force ic is retracted, or alluming any ching Furcher chan
  33. chac che retracting Body acts upon che Rays in Lines per-
  34. pendicular to its Surtace; Pcake ic to be a very conrincine
  35. Argumene of the tuIl Truch ofchis Propolicion.

Cite

Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 58. Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/1677894601:0068?run=74