Peckham, John, -1292, Cardanus, Facius · [Milan : Petrus de Corneno] · leaf 50
.talis fpeculationis meo / dem puncto concurrunt cum catbeco.-i boc mtelhgitnr.cen tro uifus a re uifa cpftente m eodem dyametro . tunc enim pofltbile eft * ut a quolibet puncto circuli fiat reflexio. uni / ca tamen epftente ymagine . uerbrgratia fit fpeculum.a« dM.g.x fit dumeter.a.s.w…
Optics
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