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

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1. nor 5o trom the Cenere, bur ony pals alons ele
2. evere no Tuch C’entre near ic ac all.
3. Wrten che Projectile Norion oL the Planets is
4. inis Oiection, perpendicular ro a Linefromthe
5. Sun, aud in its Dcoree ot Velocier, (0 nicets
6. adapced and contemper d ro che Ouancies ot rhe
7. Suns Aeclaction chere, thac neither can Over-
8. come the orher, (the Force oF Gravication tO-
9. ards elle sun, and che Celerier of che Planers
10. ProPer Mbions, beins pertectir in aequilibrio,
11. the Orbirs ot uch Rerolving Planers will be
12. Compleat Circles; themselres neither approach-
13. ins to, nor recedins trom the Sun, che Cenere
14. OF their Morions. And che Case is the same in
15. Secondaty Planers about cheir Primary Ones.
16. Thus ris supposable, Thacthe Velocirs oF alI
17. che Planets abour the sun, wvas exactls accom
18. modare Miginally ro his Porver oF Aerraction;
19. and chac cheir Primirire Orbirs vere Perfect Cir-
20. cles; From wrhich ac this Dar cher do noc much
21. ditter. Thus horverer, Fupiters Four Sacellites
22. Or lccle Moons hare cheir Morions (0 exact1)
23. proportioned r0 cheir Grarication ro him, chac
24. cheir OrDitS, 25 Far a5 the most nice Oblerra-
25. tions can judge, are perfect Circles, they Kecp.
26. ing ac an equal Distance From his Centre in aII
27. ele Poinrs os cheir Courses about him.
28. Whenthe Projectile Morion is nor adapred rO
29. bue is cicher r00 (wifr or r00 No For che Atra.
30. ction torvards che Ceneral Body, che Orbirs de-
31. scribed rill be Cllipsis; and in che former Cale,
32. Wvhen che Projectile Morion is 100 (vitt, theOr-
33. bir will be bisger than the Circle; and the near-
34. ex Focus oF che Fillipsis ill be coincidemr Wich L
35. Cencrat Body.
36. ac difterent Distances From il, Ther will describe
37. Fioures oF disterent Species Aboutir. FOr WHer
38. chal decerminate egrée ot retocus
39. ice ivere just Commensurate 10 the
40. Cenital Bodies Auraction, diel (0 voula pro
41. duce à Circular Orbic, mult ac d Ldetter Di
42. Sance be 100 hard For ic, by seaton oF che Di
43. minurion of te Accraction clere; an Clliptica
44. Orbie must be described, whole nearer Focu
45. avould be coincidene ich il Central Body
46. like manner, Wvhen che lame c
47. eree of Velocies vere, al a Mau Matce
48. artiere che Cencral Atraction ls augmenced, is
49. vould beroo licle tor the lanle, and an Fillip
50. ticat Orbir must be descriecus utiose farthie
51. Focus voule
52. du. This cannor be ditticule, ii pou contider
53. thac the Species oF the PlanccaL) ABIIS depenc
54. (0lY on che Proportion berweenthe
55. arus rhe Cencral Bod), altet iC revets0
56. pondene co che Auractire Force of the Centrai
57. Langent in which ic as morins, as il chere Body R, neicher will prevail; and the Bod
58. prelerrirs an equal Diltance trom elie Centre,
59. WilelcriDe ie Circle B0 F b.
60. IF che Cclerirs d Sleacet, l W Oretcoe
61. the Arrraction, and cast ic selE Farrtier oA che
62. Centre for lome time, and lo revolre about it in
63. ehe larger Fllipsis BIIF C; the Central BodY
64. Possesins chat Focus A, Wvhich is nearest che Poine
65. B, wotiere rhe Auraction beraH. BdL I CIC LC
66. lerier be smaller, the Acrraction oF the CenEraY
67. BodY A will be roo hard For ic, Wwill Force ic FOF
68. Tome time to come nearer, and to describe che
69. be bers plam Leom che Contiderarion ot ihe lit
70. Eure relacing hereto.
71. leser Fllipsis B R L I; the, Ceneral BOdy pos
72. Cestins châc Foeus A erhich is Farthest from the
73. Poine B, Where ine AErractiOn beGaII: HS WI
74. Tis indéed postible chac che Celeritr ot Bo-
75. clies mas be lo creat, compared rich che t’orce
76. ot Aerraction 10 the Central B0d7, 25 10 cast
77. them oH wwich such Violence, thac che Aurac
78. willnerer be able ro bring them round, or make
79. them rerolre aboue: In Wtuch Cale the Orbirs
80. described will be onc, ot the ocher Conick Sc
81. Aions, Cixher Parabolas Or: Fyperbolas, accord
82. ins ro che less or grearer Violence with whicte
83. che Bodies are throun; and the Central B0d
84. prill possels the Foous oF such a Figure. Buc ne
85. Phaenomena OF Nacure perluadins us that defacto
86. any ot che Flearentr Bodies do delcribe eirhe
87. OE chole Lines, (tho Comets Cllipses come near
88. to Parabol a 55) Sereral Bodies morine about che
89. Pame Central orie, tho cheir Primirire Velocit
90. vere equal, and Direction alike, yer il cherbe
91. one Disto
92. irtich 2
93. eterminare De
94. De coincident wich che Central BO
95. ction 1O
96. the Projectile Morion; a5 ThaE PrOpOrriOn rC.
97. mainins ac any Distance whacloerer, the Big.
98. nels oF the Orbirs will be rarious, bur che Spe.
99. sed, Thepecies ot LGues. Ms be chansc
100. cies thelame: S0 When chac Proporrion is cham
101. also; Which beins done, che Velociry siven, b
102. the various Force ot Arrraction in Pereral Di
103. stances From the Cenere, as vell as by che vari
104. And in che latrer Case, the Orbie will be lese
105. than the Cirele, and che FartHer FocuS OE the FI
106. Dixsis ill be coincident wwich chac Central Body.
107. ous Velociries ar a giren Distance, of wrtich be-
108. Fore; ris evident che Species oF che Orbirs will
109. be aeLCI s CIS as vell as in the forme
110. Case
111. And ihe Bteatet Disproporion there is Be-
112. eveen ehe Ouanrier oF Acrraction and the Ve.
113. a CIr.
114. Chuo, De Celetuy ol P De Exactly Cortes, lJoctes ol se Del etvine Bolico, ihe laches send

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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/806933011:0635?run=74