. 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 . eo quo denfiora funtraedi3fecunda3eonecefTe eft res appareremaiores uel minores,ficutinfra docebirur* Propofitio nrrt Locusimaginum,ci1: m concurfu pcrpcndiculariu
. 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 . eo quo denfiora funtraedi3fecunda3eonecefTe eft res appareremaiores uel minores,ficutinfra docebirur* Propofitio nrrt Locusimaginum,ci1: m concurfu pcrpcndiculariu£rcuifa,imaginabifium duciin fuperficiem diaphamipfam contincntis,cupyramidc, fub qua res uidctur* Sicut fupra patuit, omnia quae uidentur recteapparcnt,ac proptercomprehenfionemradfj ,perquam res oculo prsfentarur, exiftimatur res efteiv\ fine ipf?us radrj in continuum producti ♦ Sfcutergo pro fundamento in fpeculis fupponitur5remapparere in concurfu cum catbeto ,ita cV in ,fituifusA,uifibiIeB intra a*quam, fiteg b c radius, per quam fpecies uiHbilisuenituerfas ocufa, ifte radius procederet in c,fi.,medium elTeteurfdc naturar cV dfaphanitatis, fed *nuncfrangitur i perpendiculari f e3 cV cadit in A«Ducatur igitur radius a c, fcilf cet radius uifualis,incontmuumcVdiredurn,donec confing2t per*pendicularem erigibilem itc utfas h r,1n :igitur locus apparitionis in i^quac fccund uWus-jritatemeftins,. G Perspectivab CommvnisPropofitio v* uifam per radiosfraclos, extra locum fuumfnecefleeftapparere, Hoc patet ex pradidHs* Si cnim in concurfaperpendicularium & radiorum uifuahum appa*ret res uifa,& hic concurfas eft extra locum rei uifa%NeceiIe eft ergo, rem ahbi cp ubi fit apparere*In planis autem diaphanis,iemper imago apparebitpropinquior5qu£m res fecundum ueritatemfit. In fphaericis hocficutinfra patebit, aliter ehepoteftJn planis autem uniuerfaliter Oc eft, uerbigratia g cuapparebit inKL« Propofitio v 1« Res partim cxi&cns in acre, partim i
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Keywords: ., bo, bookauthorpeckhamjohnd1292, bookdecade1540, booksubjectoptics
