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# Title: [Astronomiae Physicae & Geometricae Elementa] Astronomiæ Physicæ & Geometricæ Elementa (shelfmark Leibn. Marg. 124)
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ASTRONOMEE PAESTCA
tur per totidem, ut superius dictum) tempori dato congrua, e Con-
Hlabitur Lonsitudo quaesita ab Ai. quinoctio verno, rejecto integro cir-
culo, E Tumma hunc excesterit. Ouod E ad tempus datum quae-
rantur Pixa ACCensio Recta e Oeclinario, ex inventis ejus Londitu.
dine d Lacitudine ad tempus datum ut prius, fiet provositum per
convertam Prop. XXVII.
SFCTIO VI
De Primi Motus Problematibus insienioribus per
Calculum resolvendis.
PROPOSITIOZZXII.
Aorum duorum in Telluris supersicie Locorum Differentiam
ADMeridianorum sive Concitudinum per observationes determi-
nare, e Loca illustriora Felluris cum Latitudinibus es Meridia-
norum Disserentiis in Catalosum referre, e Clobum Terrestrem
construere.
Ab obserratoribus in datis Locis obserretur Phaenomenon aliguod
instantaneum, (initium ex. er. aut tinis Fclipleos Luna nostra, aut
Felipsis cujulris e Satelliribus foris,) nocata in utroque Locohord;
Ditterentia horarum indicatarum in A quatoris arcum converta
dat Consitudinum sire Meridianorum Differentiam qua Citam. L0.
corum autem propotitorum ille est orientalior, qui plures post me
ridiem numerat horas; si vero eandem numerent, sub eodem sunt
Meridiano. Nam quoniam idem Temporis punctum diversis no-
minibus horarum in duobus illis Locis saudet, tantum intex se dista-
bunt Locorum Meridies, aut alix quaris hora eodem nomine in-
Tignita, quantum diverta illa hora in eodem Loco; adeoque Ai-
quatoris arcus inter Locorum Meridianos interceptus rite reperitur
tribuendo cuilibet hora I5S. Dictum autem lemporis interrallum
Meridianorum Differentia vocatur, appolite latis, quia est revera
Meridierum.
Pariter, si FTorolosium Automaton horas in Locorum altero ex.
acte indicans ad alterum deportetur, ut cum alio horas illic indi-
cante comparetur; Ditterentia horarum ab HTorolosiis numeratarum
in Aquatoris arcum converta dat Lonsitudinum Disserentiam
quaetitam: sic enim, ut in catu priori, cognoscitur interrallum in-
ter horas eodem momento in binis Locis numeratas. Hlorolosium
enim deportatum supponitur horas tumilites indicare, ac si TuO IM
loco constitiset.
Locorum illustriorum in Catalosum repolitorum cuiris adpo
natur Latitudo propria, eodem numero graduum desisnata (per
PFOP. VII.) quo Altitudo Poli ibi obserrata Der PFOD. XVII. Adicia-
cur etiam in altera columna Ditterentia Meridianorum per horaS
carum que partes exprecta (ex supra desexipris inrenta) L.oci prove.
(IE