Search the Nachlass

Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. -

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: 0.89.

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

The machine reads it as

  1. SPI
  2. IE the Pole OF che Primitive Circt e legute
  3. etiS IIS C CHEC.
  4. a Diameter) curs ic.
  5. ertich in che Projection will Bc an Ark OE a GFCAE
  6. Circle.
  7. 2. Consider charchis Cirete Mu Cu eC LMi-
  8. rive in evo POinES, char will be distane FrON
  9. cach ocher just a Diamerer, 25 is che C ase oF th.
  10. Incersection ot all grear Cireles.
  11. 2. The Pole ot ehis Circle must be in a Lit
  12. Perpendicularto iis Plane. And,
  13. 2. Lay 2 Ruler trom A cO B, ic will cur che
  14. Limb in F; chen rake che Cord of 90 Degrees,
  15. and sec ic trom Fcoh.
  16. 3. Lay a Ruler From BEo A, ic will cuED P in
  17. S: which Poines is che Pole required.
  18. N. B. The Aindino che Poinrs sandB, is called
  19. reducins B co che Primitive Circle, ard 10 rhe Di.
  20. ameter.
  21. EROP. XV.
  22. Problem 4. T0 describe a Spherical Angle os any
  23. Number os Dezrees siven.
  24. P. TF the Angular Poine be acthe Center oF che
  25. Primitive Circle, then rismade ac any Plain Angle,
  26. numbrins che Deorees in che Limb, From che L ine
  27. OF Cords: For all Circles passins chro che Centre,
  28. and wrhich are ac Righe Angles wich che Limb,
  29. must be projected into Riphe Lines.
  30. 2. TF che Angulas Point Be at the Periphery OF
  31. the Primitive Circle; dram a Diameter aS AC 3
  32. (sec the last Fipure:) Then cake the secanr oF che
  33. Angle siren in vour compasses, (a5 suppole 65
  34. Degrees) and Cetring one FOOF in A, crols che Di2-
  35. meter in e, exifno Diamerer be drawn, placing one
  36. Foor in C, and CrostInS THC FORMeF AEK, vou wvill
  37. find che same Poine e, Wvtich is the Cencer ol rhe
  38. Cirele A a C, ertrich wichche Primitive makes an
  39. Ansle D A 2 OF65 DCgrceS.
  40. N. B. H che Angle siven be obrule, rake che se-
  41. cant oE its SupplemenE rO 180 DegrCeS.
  42. 3. IFa Poine as a vere aigned, chro Wrhichthe
  43. Ark OEthe Circle constiturins che Ansle must pa(S;
  44. deaw che Diameter A C (aS BCFOrC:) Tten cake
  45. che secant ot che siren Ansle, and setrins one POOE
  46. in A or C, Srike an Ark as ac e, andrhen wichche
  47. secane ot the given Angle, Petring one Foorina,
  48. cross che ocher Ark in e, Wrhich will berhe C entre
  49. 3. This Circles Pole cannor bur lie berveenthe OE che Oblique Circle required.
  50. Centre oF che Primicire one, and ils own.
  51. kDP. XIV
  52. Problem 3. Z0 find the Pole of any Cireat
  53. L.iClC.
  54. IEthe Pole OL a Right Or Perpendicular Cirele b
  55. Soughr, Tis 90 Dessces MMane, reckoned uxon che
  56. Limb trom the Cors, Wontete enet (irtrich.
  57. AS P is Pole OEthe Perpendieular CirCt a B.
  58. IF ihe Pole oF au Oblique lircle bc deser
  59. Por lntance.
  60. PROP. XVI.
  61. Problem 5. Fo dram a great Cirele thro any eud
  62. Poines siven, asa and b within the Primitive oe.
  63. quired.
  64. Leche Poles ol n dre
  65. Dra a Diamerer thro thac Poinc which is fur-
  66. hest From the Center, a5 D R, producins ic be-
  67. rond che Limb if chere be occation; Pet 90 DC.
  68. 1. Draro che Diamerex A C, audl chem auorhiex erees rom D or R c0O, and drav O a.
  69. as b F, Perpendiculas 10 i1.
  70. Them

Cite

Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. - . Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/806933011:0764?run=74