gnoraretur poiTet error in operatione contingere ; fiquidem Sol eil kl parte qui vmbri opponitur ; vt pofica vmbra E H (in priori fiaura ) Sol elt in parte EL ; & quia ex hypothefi cognofco lineam E L ( qui , vt dixi, eft lpla H E producta ) ede in parte occidentali , idcirco arcum a c, & an¬ gulum… … STylo E F per t huius ad angulos rectos erecto , deferipta autem per quintam linea Horizontali K EG, ac per 6 Verticali L E P ; £t oblerua- tum vmbri extremi punctu quodlibet H in pariete : per H igitur incedit circulus Verticalis, in quo Sol verfatur, dum a ftyli vertice vmbraproijci- tur F H.…
Sundials -- Early works to 1800 · Horology -- Early works to 1800 · Perspective -- Early works to 1800 · Horology · Perspective · Sundials
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