. Perspectiva commvnis : ideo sic dicta, quod contineat elementa tes optikes, omnibus philosophiæ studiosis necessaria : in hac enim doctrina inchoatæ disputatioes philosophoru, de natura, & proiectione radiorum unisus, luminum, colorum & formarum absoluuntur : in quibus & de speculis tractatur : summa cura & dilgentia emendata, & ab infinitis quibus scatebat mendis repurgata, necnon in quibus deficiebat demõstrationibus restituta . donon, Quando concurrunt5 uidentur resconuerfa?,quando uero non concurrunt3uidentur res euerfse &oppofitas/cilicet finiftra dextris permutata, ut in fpeculis pla*n
. Perspectiva commvnis : ideo sic dicta, quod contineat elementa tes optikes, omnibus philosophiæ studiosis necessaria : in hac enim doctrina inchoatæ disputatioes philosophoru, de natura, & proiectione radiorum unisus, luminum, colorum & formarum absoluuntur : in quibus & de speculis tractatur : summa cura & dilgentia emendata, & ab infinitis quibus scatebat mendis repurgata, necnon in quibus deficiebat demõstrationibus restituta . donon, Quando concurrunt5 uidentur resconuerfa?,quando uero non concurrunt3uidentur res euerfse &oppofitas/cilicet finiftra dextris permutata, ut in fpeculis pla*nis,Sittesuifa ab3&:ipeculumconcauuc d,radfj£reuifa poftcocurfum in e inciden tesin ipeculum, fint b -^- c,a D,qui refleclanturino. Ducaturcathe*tus b h, donec concur*rat cum radio refiexo,c g, 8>C fignetur puYt,uscocurfus, cum nota k,fimilitcr ab a procedatca the tus,donec coiin*gat d g radium reflexudi Ognetur cum nota tconcurfus, ac conne*dant per lineara recia,pundaxL* Eftigiturk l imago reiuifar,cY puclu £, quodeft furfum & eleuatu, uideti k deorfum5fic A,t\d eft in l patetexilto principio,quae fubeteuatioribus radrjsuideatur,eleua*t iora apparenf^uidetur itacg a b linea » fit res iiiVfa m N,cuius radrj nort concurrunt ante incidentiam in fpeculu,& fint radrj ab ea procedetes m c,n c,qui rcfiedantur in g pun*^^donec ultrafpeculu con*. m currat Perspectivae C om mvnis airruntcumGCjinpundioo,fic &hn cathetus protjciatur incontinuum direciumeg,donec cum g d m p concurrat,ac o p,puncta per Jineam recfam coniungatur, Eritigitur o p imagorei uifa^qus! euerfa cV oppofi ta ,ut in planis fpecul is apparebit*Patetitacp propofitum. Quiuero coptofiorem huius demon*ftrationedefiderat» (extum confalat perfpedtiuae Alhacen, Propofitio L U In fpccufis concauis,res aliquando pares, aliquandomaiorcs,aliquando uero breuiores apparere» HoccopiofiflTmedemonftraturin Tirperfpecliuaf, Sedta--men breuiter colligitur ex p
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Keywords: ., bo, bookauthorpeckhamjohnd1292, bookdecade1540, booksubjectoptics
