Philosophiae naturalis principia mathematica . lla-tur ad pedes duodecim, fluidum Lunare attolli deberetad pecfes fere nonaginta. Eacjue de catifa; figura Lunx Sphaeroiseflet, cujus maxima diameter producta tranfiret per centrum Ter-ra, & fuperaret diametros perpendiculares exceflu pedum igitur figuram Luna affectat, eamcpe fub inicio indueredebuit. Q^ Corol. Inde vero fit ut eadem femper Luna? facies in Terram ob-vertatur. In alio enim fitu corpus Lunare cjuieicere non poteft,fed ad bunc fitum olcillando femper. redibit. Attamen ofcillationesob parvitatem virium agitanti
Philosophiae naturalis principia mathematica . lla-tur ad pedes duodecim, fluidum Lunare attolli deberetad pecfes fere nonaginta. Eacjue de catifa; figura Lunx Sphaeroiseflet, cujus maxima diameter producta tranfiret per centrum Ter-ra, & fuperaret diametros perpendiculares exceflu pedum igitur figuram Luna affectat, eamcpe fub inicio indueredebuit. Q^ Corol. Inde vero fit ut eadem femper Luna? facies in Terram ob-vertatur. In alio enim fitu corpus Lunare cjuieicere non poteft,fed ad bunc fitum olcillando femper. redibit. Attamen ofcillationesob parvitatem virium agitantium eflent longe tardiflimx : adeo utfacies illa, quaz Terram femper refpicere deberet, poflit alterumorbis Lunaris umbilicum, ob rationem fuperius allatam reipicere,neque ftatim abinde retrahi & in Terram Lemma I. Si AP E p Terram defignet uniformiter denfam, centroquc C &.polis P, p £7* dauatore A E delineatam 3 & fi centro C radio C P at-fcribi inteihgaturj^/wn* Pape 3 /it autem QR planum, cuirettaaccn- lii 2 tro. .?. C 468 ] tro Solis ad centrum Terne ducla normaliter infifiit; ty Terrdt totius ex-terioris PapAPepE, au& Sphdird modo defcriptd altior efi, particu- U finguU conantur recedere hinc inde dplano QR, fitcpue conatus particuU cu-jufaue ut ejufdem difiantia d plano: eritvis & efficAcia tota particularum om-nium, ad Terram circulariter moven-dam, quadruplo minor qudm vis totaparticularum totidem in JEauatom cir-culo A E, uniformiter per totum circui-tum inmorem annuli dijpofitarum, adlerram confimili motu circulari moven-dam. Et motus ifie circularis circaaxem in plano QJK jacentem, O* axiP p perpendiculariter infifientem, peragetur. Sit enim J2<£_ circulus minor ^Equatori ^£parallelus, fitque Lparticula Terrae in circulo illo extra globum (P a p e fita. Et fi inplanum QJ{ demittatur perpendiculum L M, vis tota particulasillius ad Terram circa ipfius centrum convertendum proportiona-lis eric eidem L M: & fi hxc vis L M(per Legum Corol. 2.) diftin
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