Delfino, Federico, De fluxu et refluxu aquae maris, 1559

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1mobilis, uſque ad X gradus, & XLV minutos in arietis
iuſdem
eclipticæ mobilis: & quantitas uniuſcuiuſque horum
graduum
eſt XXI gradus, XXX minutos.
maxima enim di­
ſtantia
capitis arietis, & libræ mobilium à ſeptione eclipticæ
mobilis
cum æquinoctiali eſt per gradus X, & XLV minu­
tos
eclipticæ mobilis in piſcibus, & per X gradus, & XLV
minutos
eclipticæ mobilis in ariete; qui aggregati faciunt
arcum
XXI gradus, et XXX minutos eclipticæ mobi­
lis
: et idem eſt ex parte libræ mobilis: unde accidit, quòd
maxima
declinatio eclipticæ mobilis, ideſt octauæ ſphæræ ua­
riabilis
eſt, maior quandoque declinatione eclipticæ fixæ, ideſt
quandoque
minor eadem, quandoque ſibi æqualis.
tunc enim
maxima
declinatio eclipticæ octaua mobilis eſt æqualis maxi­
declinationi eclipticæ nonæ fixæ; quando ecliptica mobi­
lis
eſt collocata in ſuperficie eclipticæ fixæ; quod accidit capi­
tibus
arietis, et libræ mobilibus exiſtentibus in ſectionibus
ſuorum
circulorum paruorum cum ecliptica fixa.
maior uero
capitibus
arietis, et libræ mobilibus exiſtentibus in ſectioni­
bus
contactuum.
in punctis ſuorum circulorum paruorum
diſtinguentibus
quartas eorum circulorum à ſectionibus eo­
rum
cum ecliptica fixa: unde eam Ptolomæus inuenit XXIII
gradus
, LI minut.
et XX ſecund. minor autem in ca­
pite
arietis, et libræ mobilia fuerint in punctis interſectionis
ſuorum
circulorum paruorum cum æquinoctiali.
tunc enim
interſectio
eclipticarum erit in puncto eclipticæ mobilis, ideſt
octauæ
: maxima declinatio ab æquinoctiali, qui minus decli­
nabit
, quàm caput cancri, et capricorni ecliptica fixa, ſeu no
.
æquatio autem octauæ ſphæræ eſt arcus eclipticæ octauæ
ſphæræ
, uſque ad interſectionem eclipticæ octauæ ſphæræ cum
æquinoctiali
; ſed motus acceſſus, et receſſus eſt arcus circuli
parui
ab interſectione circuli parui cum æquinoctiali occiden
tali
per medietatem circuli parui ſeptentrionalem, progre­
diendo
, uſque ad caput arietis octauæ ſphæræ in ſuo circulo
paruo
.
hoc motu octauæ ſphæræ dicto contingit, ut ſtellæ fi­
in octauo cælo uideantur nunc moueri uerſus occidentem,

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