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Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 5

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. 25 17 20 11. In Lighe ot orher Colours the sines have
  2. ocher Proporrions: buc che difference is (o licele chat it
  3. necd seldom De consdered.
  4. Suppose theretore, that R S reprelents the surtace oF Fig. P.
  5. Ragnaring Wacer, and C is che point ot Incidence in
  6. irhich any Ray comins in che Air trom A in che Line
  7. AC is reflected or retracted, and I vould know irhether
  8. ehis Ray Phall g0 atter ReAerion or Retraction: I crect
  9. uxon che surtace of che Water trom the point ot Inci-
  10. dence the Perpendicular C P and produco ic donmards
  11. t0, and conclude by che Airst Axiom, thac che Ray af-
  12. cer Rellexion and Retraction, Phall be Found Comerhere in
  13. che Plane ot che Angle of Incidence AC P produced.
  14. lec Falt cheretore uxon che Perpendicular C P the sine ot
  15. Incidence AD, and it che reftected Ray be delired, Ipro-
  16. duce AD eo B (0 thac D B bC equal tO AD, and dram
  17. CB. For chis Line C B Phall be the reffected Ray; the
  18. Angle ot Rellexion B C P and ies Sine BD being equal
  19. co che Angle and sine ot Incidence, as ther oughe to bc
  20. by che second Axiom. Bur it che retracted Ray be de-
  21. sired, Iproduce AD eoTI, (0 that D II may BC EO ALd
  22. as the sine ot Retraction to che sine ot Incidence, thac is
  23. 25 3 c04; and abouc che Center C and in the Plane A C P
  24. wich the Radius C A describing a Cirele AB F I draw
  25. Parallel cothe Perpendicular C P C, the Linc HP cuctine
  26. the circumterence in F, and jorning CP, chis L inc C F
  27. Pail be che Line of che refracted Ray. For iFP, F BC lec
  28. fall perpendicularty on the Linc P C, this Line P F Phalb
  29. De che sine ot Retraction of che Ray CF, che Angle oF
  30. Retraction being P C (; and chis sine F F is equal eo
  31. DII, and consequencr in Proporrion ro the sine of inci
  32. dence A D a5 310 A.

Cite

Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 5. Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/1677894601:0015?run=74