. 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 . l quocaditradius a k recfre,cV h e oblique. Dico qudd hz^no dire&e procedit in o,nec frangitur uerfus perpendicularem ad p E,fed illa cadens in Q,ficut patetin fig
. 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 . l quocaditradius a k recfre,cV h e oblique. Dico qudd hz^no dire&e procedit in o,nec frangitur uerfus perpendicularem ad p E,fed illa cadens in Q,ficut patetin figura«Et hacc eft ratio5 quare res in quibufdamtnedrjs apparent maiores, *k in quibufciam aiino*xes9nt infra patebit* Propofitio » Inomni pun&o medfj,quoeft & luminofo remo«fcfor,ed in ipfo excipitur radius multiplicion Hoc f?c probatur«Qisanto punclus plusdiftat& SoTe,tan*to defcendit eius Jumena maiori circtwnferentfa, feu portioneSoIisjcVeconuerfo, quo propinquior Soli tanto defcendit & rni*.« in pun&o remotiorieftlumen mukipH^iusj&d ex diftantia debiIius,quod fic dcuiQnftratur. Accipian* £ rj tur. Perspectivae Comhvnis tutirxcorporefphaMcolumtnoib^cuiuscentrurn f?t K,duopun-*da oppoftta a b» Et diffundatur lumen & ptin&o a, per hcmi*fphserium,ut patetper v i. huius,cuius hc-mifphcertj diamcter fit Jinea c a d„ Certurneft igitur, qudd a punfto a„ cadit lumcn it\d pundtucV in nulfucorporiluminofb proapioquiorem, ficut ex X 11 n. buiosfequi-turXineaenim cadcotingensefta&inteream cV fphajram nulla cadit media, fkut patetper X Euclidis*Amplius f? fumatur punclus fupra a in corpore Iuminofo,utpote e, radians fuper fpa*cium obiecftu, cV terminus radiationis fit V*nea contingens f e eft qudd in Ii«nea k G,primus punclusadquem perueniclumcn a pun<$o G,cV in nullum i punclo A,in punclu d,6V in nulfum corporif uminofo propinquiorem, Cumcg abomni puri*c*to luminofi mittente radium ftium in punc
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Keywords: ., bo, bookauthorpeckhamjohnd1292, bookdecade1540, booksubjectoptics
