Druckschrift 
Mathemalogiu[m] prime p[ar]tis Andree alexandri Ratisbone[n]sis mathematici su[per] nouam et veterem loycam, Aristotelis / [Beiträger: Hermann von dem Busch]
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Poſteriotũ. qꝛ ꝓcedit ex effectu ad cauſaʒ vel a cauſa remota ad effectũ ĩ pſpec tiuis hoc nobis apparet apparitio vmaginũ in ſpeculis viNenne b eſt. apparent nobis ex reflexiõe in illo loco. ſed ꝓpter quid hoc* it in illo loco. in alio eſtꝓpꝛia demõſtꝛatio ſic in multis ſciẽtijs*

quãtũ ad nos apparẽt nobis effectꝰ eſſe nocioꝛes; pꝛimarie cauſe

coꝝ Et hãc exẽplificat hic phᷣs ſcʒ demõſtratiõeʒ qꝛ eſt pᷣmo poĩt ex

emplũ de demoõſtratiõe qͥa. ꝓcedit effectũ.ſcðo pcedit cauſaʒ

mediatã. Circa p̃mũ ponit exemplũ de demonſtratiòe qꝛ fit effec

ↄuertibilẽ Scðo de ea fit effectũ ↄuertibilẽ Et ponit ad pꝛi

duo exempla de ↄuertibili vt ſi quis ꝓbare velit. planete pꝛo

pe ſunt. hoc ſcintillant talis eſt demõſtratio qꝛ eſt. ibi ꝓ⸗

cedit᷑ ab effectu ↄuertibili ad cauſam vt arguẽdo hoc.q̃cũq; ſtelx.

le ſcintillant ꝓpe ſunt. Sed planete ſcintillant. ergo planete ꝓ⸗

pe ſunt. ibi ꝓcedit᷑ ab effectu ad cauſam quia ꝓpe ſtare eſt cauſa non 2

ſcintillatiõis Eſt aũt ſcintillare dicunt ꝑſpectiui tremere.ʒ iſta ſcin⸗

tillatio eſt in re viſa Seſt ex ꝑte viſus ĩpꝛopoꝛtionatã diſtantiã

ex quadrageſimaoctaua p̃me ꝑtis ꝑſpectiue.qꝛ viſus bene figit᷑

in talibus obiectis ꝓpter nimia diſtantiã erit angulus viſibilis in

oculo ita acutiſſimꝰ rem appᷣhẽdere in ictu poteſt et apparet ic

tu tenebꝛoſũ ictu lucidũ ſic tremunt qſi in inſtãti. ſtelle fixe

maxie ſcintillãt ſunt in octaua ſpera plus diſtãt tales ſtelle a firma⸗.

mẽto planetarũ in decuplo qᷓ; firmamentũ planetarũ a nobis Et il⸗

la demõſtratio ↄuerſione eſt demõſtratio ꝓpter quid.vbi pꝛocedit᷑ a

cauſa ad effectũ vt ponẽdo maioꝛẽ extremitatẽ demõſtraõis qꝛ pꝛo

medio in demõſtratõe ꝓpter quid.tũc ↄuertit᷑ demõſtratio qꝛ in de⸗

mõſtratõʒ ꝓpter quid. hoc. quicquid ꝓpe ſtat ſcintillat. ſed pra.

nete ꝓpe ſtant.ergo ſcintillant. Sũt ergo dicti planete erratice q̊n⸗

tum ad motũ.quia mouentur diuerſis motibꝰ Mam mouent᷑ motu*

ↄtrario motui pmi mobilis.q motꝰ p̃mi mobilis ratio regła om⸗

nis motꝰ. Secundũ exm̃ eſt de demõſtratõe quia que dat᷑ effeetũ

uertibilẽ.vt ad ꝓbandũ luna ſit circularis figure hoc mediũ qð̃.

eſt accipere augmẽtũ lumis circularit tũc etiã ꝓbat᷑ cauſa effectum*

vt ſic arguendo quicquid recipit augmẽtũ lumĩis circularit eſt circla⸗ re. ſed luna eſt huiuſmõi. ergo luna eſt circularis Minoꝛ patet qꝛ vi demꝰ ad ſenſum luna recipit lumẽ circularit᷑.qꝛ in nonilunio appa ret modũ arcꝰ ſic ſucceſſum tꝑis auget circularit recipit circu larit lumẽ ſuũ a ſole. Vnde recipe augmẽtũ lumĩs circularit eſt effe⸗ ctus lune circlaris lunã eſſe circularẽ eſt cauſa illius eſt reciꝑe au gmẽtũ lumiĩs circularit. et ille effectꝰ cauſa ↄuertit᷑ in demõſtratõʒ⸗ ꝓpter quid.hoc.quicquid eſt circulare recipit augmẽtũ lumĩs cir cularit᷑. ſed luna eſt circularis. ergo recipit agmẽtũ lumĩs circłarit᷑.

Eſt enim in huiuſmõi demõſtratio ꝓpter quid. ex circulatione coꝛꝑpis arguimꝰciꝛculationẽ receptõis lumis. erit demõſtratõ qꝛ vt diximꝰ ecõuerſo. Infallibilit autẽ poſſumꝰ ex circłatõe coꝛꝑis arguere cir⸗ culatiõʒ receptõis lumĩs qᷓ; ecõuerſo. vo dicit᷑ de ꝑpectiuo dici de bet in ipſo foramine non rotundo recipit᷑ lumẽ ſcðm foꝛmã foꝛa⸗ minis. patet qꝛ ſi ꝓpe foꝛamẽ ponat᷑ obſtaculũ faciat lumẽ foꝛmã foꝛamĩs vnde et dicũt perſpectiui. ſit lumẽ rotundũ foꝛamẽ rotundũ.niſi a remotis.in ipſo ergo receptiuo recipit᷑ lumẽ ſcm foꝛmã recipiẽtis quia ergo luna eſt rotũda recipit᷑ in ea lumẽ hm foꝛ rotundã a poſterioꝛi.ergo effectũ ex rotũditate receptõis lu⸗ mis poſſumꝰ arguere rotunditatẽ coꝛpis lune. Cauſa autẽ q̃rsa re⸗ motis foꝛamẽ rotundũ apparet foꝛma lumĩs rotũda põt ſumi ex pte coꝛpis lumĩoſi. quia coꝛpꝰ lumĩoſum rotundũ eſt.licet a ꝓ⸗* pĩquo foꝛamĩs teneat lumẽ foꝛmã foꝛamis. a remotis 407 paulatti u) 8* 2 3