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Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 10

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: 0.88.

Original at the GWLB · Page image · Annotations (IIIF) · Download text

The machine reads it as

  1. L
  2. and my Fre ras distant Erom it 8 Tnches. And a third
  3. proportional to halt this From the Diameter of the
  4. Sphiere 15 soeso Parts oF an Inch. This is theretore the
  5. chicknels oF the Air atthis Ring, and a titth part there-
  6. ot, viz. the sosioth parc ot an Inch is the thieknels there
  7. OE at the Erst oF the Ringo as above.
  8. Perred the lame thins by lavins these Object-C7lasco
  9. upon Hat pieces of a broken Lookins-glats, and tound
  10. the same meatures oF the Rings: Whuch MakeS ME
  11. rely uxon them till ther can be determined more ac-
  12. curatelr by Cilasses ground to larger Spheres, though
  13. in Cuch Cilases greater care muit De taken OE a FruC
  14. Plaim.
  15. Phele Dimentions wrere taken irhen my Pye WaS
  16. placed almost perpendicularly orer the GlaPes, beins
  17. about an luch, or an lnch and a quarter, distant Erom
  18. the incident rays, and cight luches distant Erom the
  19. Cla(s; (0 that che rays ivere inclined tothe Cilals in an
  20. Ansle ot about 4 degrees. Whence by the Tollorvins
  21. Oblerration rou will understand, that had the rays
  22. been pervendicular to the CElases, the thickneis otthe
  23. Air at these Rings ould hare been less in the PropOr-
  24. tion ot the Radius to the secant oF 4 degrees, that is ot
  25. 10000. P et the thicknesses tound be theretore dimi-
  26. nistred in this proportion, and ther vill oecome ssogo and
  27. s Or (to usc the nearest round number) thC sguo th
  28. part ot an Inch. Thisis the thickness oF the Air at the
  29. darkelt part ot che Arst dark Rins made by perpendi-
  30. cular rayS, and hals this chieknels multiplied by the
  31. progreltion, 1,3,597, 9, TI, c. Sires thethicknesles of the
  32. Air at the most luminous parts oE aIl the brishtelt
  33. LII8S, VIZ. 1oS e eces SC. Theis arithmeticat
  34. MeaNS

Cite

Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light, fol. 10. Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/1677894601:0182?run=74