Apian, Petrus
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Instrvmentvm Sinvvm, sev primi mobilis
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TABVLARVM SINVVM PER PET. APIANVM.
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ſcilicet 42. </
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<
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<
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<
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<
s
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">Quanta ſit diſtantio Solis aut ſtellæ à uero illo æquinoctiali ortu uel oc-
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caſu uerſus meridiem ſiue ſeptentrionem, aut uiciſsim à meridiano ad ortũ
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uel occidentem, expedite cognoſcere.</
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<
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<
s
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<
s
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">altitudine ☉(sun) in circulo uerticali ageretur d ctũ etiã
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eſt quid ſit ortus uel occaſus æquinoctialis. </
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<
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">Circulus q̊ ille maior à Zenith per æquino
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ctialia iſta puncta ortus & </
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s
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">occaſus eductus, uocatur circulus uerticalis, unde ferè ſolet di
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ſtantia hæc Solis & </
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uerſus ortũ uel occaſum. </
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<
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xml:space
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">Sciendum etiã eſt in uniuerſum, ꝙ quilibet circulus maior ex
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zenith capitis ꝑ locũ Solis aut ſtellæ ubicun cõſiſtentis uſ ad horizontẽ eductus, cir
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culus uerticalis uocatur. </
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<
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<
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">tu diſtantiã graduũ
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ab ortu æquatoris, uel à circulo uerticali uero numeras uſ ad huc, ea diſtãtia dicit̃ diſtan
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tia Solis horizõtalis ab ortu. </
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<
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tudinis, qui etiã uerticalis dici poteſt, ſupputas, uocabitur hæc diſtãtia Solis horizõtalis
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meridionalis uerſus ortũ. </
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<
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& </
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<
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<
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Quorſum, à Germanis @ohinaus, uerti poteſt? </
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in motu Solis, primũ quære angulũ quẽ facit eclyptica cũ horizonte orientaliad illã illã ho
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<
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ram, id´ ꝑpronunc. </
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</
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">& </
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<
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<
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<
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ex illis malueris tuo accõmodare inſtituto, mox quære diſtantiã gradus Solis ab aſcen-
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dente, ſaltẽ ſecundum gradus eclypticæ, eius diſtantiæ ſinum cõplementi tibi propone
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ad abacũ ſupputatorium, adiungendo etiã ſinũ cõplementi alitudinis Solis, minorẽ duc
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in ſinum totũ, & </
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<
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<
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horizõtis à puncto illo; </
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<
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">ubi eclyptica ſecar horizontẽ uſ ad arcũ uerticalẽ, ꝗ ex Zenith
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capitis per corpus ſolare ad horizontẽ uſ deducitur cõputatũ. </
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<
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de nec temere dicemus ſeruatũ, unde ſi ſubtrahas amplitudinẽ ortus gradus aſcendẽtis
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exiſtẽte tamẽ pũcto illo ſeptẽtrionali, remanet diſtãtia ☉(sun) horizõtalis q̃ſita Sin aũt pun-
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ctũ ort9 meridionale fuerit, adde amplitudinẽ ei9, et habebis optatũ. </
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<
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<
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PLVM
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pi.</
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plũ ſit hoc tibi, rurſus ecce, ꝓpono mihi horã introniſatiõis, ubi altitudinẽ ☉(sun) ſupra hori-
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zontẽ ꝑ 5. </
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<
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<
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<
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<
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25. </
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<
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<
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<
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cæ iuxta 5. </
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<
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<
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<
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<
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dente 45424. </
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<
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<
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<
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ſupra horizontẽ. </
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<
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<
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<
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<
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<
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<
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quadrãte relinquit 50. </
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<
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<
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<
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<
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<
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<
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ticalem Solis, at hunc numerũ dicimus ſeruatũ. </
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<
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<
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5. </
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<
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<
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<
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</
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<
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<
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<
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<
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<
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.</
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li 66913. </
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<
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<
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<
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<
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<
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<
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<
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<
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<
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<
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in eleuatione 48. </
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<
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<
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xml:space
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/>
nali, ſubtrahere debeo amplitudinem eius à priori diſtantia Solis horizontali, quã abin-
<
lb
/>
terſectione eclypticæ & </
s
>
<
s
xml:id
="
echoid-s3404
"
xml:space
="
preserve
">horizontis cõnumeraui, qui erant gra. </
s
>
<
s
xml:id
="
echoid-s3405
"
xml:space
="
preserve
">50. </
s
>
<
s
xml:id
="
echoid-s3406
"
xml:space
="
preserve
">mi. </
s
>
<
s
xml:id
="
echoid-s3407
"
xml:space
="
preserve
">8. </
s
>
<
s
xml:id
="
echoid-s3408
"
xml:space
="
preserve
">ſic à ſubtractiõe
<
lb
/>
remanẽt 21. </
s
>
<
s
xml:id
="
echoid-s3409
"
xml:space
="
preserve
">gra. </
s
>
<
s
xml:id
="
echoid-s3410
"
xml:space
="
preserve
">4. </
s
>
<
s
xml:id
="
echoid-s3411
"
xml:space
="
preserve
">mi. </
s
>
<
s
xml:id
="
echoid-s3412
"
xml:space
="
preserve
">Azimuth nempe solis ab ortu æquinoctiali uerſus meridiẽ. </
s
>
<
s
xml:id
="
echoid-s3413
"
xml:space
="
preserve
">At
<
lb
/>
<
note
position
="
right
"
xlink:label
="
note-0053-08
"
xlink:href
="
note-0053-08a
"
xml:space
="
preserve
">
<
emph
style
="
it
">Azimuth</
emph
>
<
lb
/>
<
emph
style
="
it
">solis 21.</
emph
>
<
lb
/>
<
emph
style
="
it
">gra. 4. mi</
emph
>
.</
note
>
hæc quidem regula in uniuerſum uera eſt, quãdo Solis altitudo ſupra horizõtem maior
<
lb
/>
eſt altitudine eius in circulo uerticali, quam enunciato 20. </
s
>
<
s
xml:id
="
echoid-s3414
"
xml:space
="
preserve
">inuenire didiciſti. </
s
>
<
s
xml:id
="
echoid-s3415
"
xml:space
="
preserve
">Si aũt alti-
<
lb
/>
tudo Solis minor fuerit in hora propoſita ̈ ſit eius altitudo in circulo uerticali, certum
<
lb
/>
tunc eſt Solem in aliquo ſignorũ ſeptentrionaliũ eſſe, & </
s
>
<
s
xml:id
="
echoid-s3416
"
xml:space
="
preserve
">hic iam ſubtrahe numerum ſer-
<
lb
/>
uatum ex iam inuẽta amplitudine, at manebit diſtantia solis horizontalis ſeptentrio-
<
lb
/>
nalis, hoc eſt arcus ab ortu æquinoctialis uerſus ſeptentrionẽ cõputando. </
s
>
<
s
xml:id
="
echoid-s3417
"
xml:space
="
preserve
">Gradũ autem
<
lb
/>
eclypticæ aſcendente exiſtente meridionali, adde amplitudinem aſcendentis ad </
s
>
</
p
>
</
div
>
</
text
>
</
echo
>