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Perspectiua horaria, siue, De horographia gnomonica tum theoretica, tum practica libri quatuor ... (1648)

Maignan, Emmanuel, 1601-1676 · Romae : Typis & expenses Philippi Rubei · leaf 227

An illustration from Perspectiua horaria, siue, De horographia gnomonica tum theoretica, tum practica libri quatuor ..., 1648, leaf 227
is loci . Cum itaque didda Meridiana , & AEquinodEialis inuicern ad angulos redtos fecum lem- per fint ; fupereft, vtinueftigetur dati Meridiani punddum , quo eam. yEquinoddialis fecat ; ad eius vero punddi inuentionem , dui folum obiep- uandi funt leges. Primo fi planum propofitum fecet ^Equator… … Sit enim , vt fupra, in plano a Meridie in ortum declinante , & ad Hon- zontem inclinato , recto autem ad .Equatorem , Itylus AB, & linea plani Meridiana propria E A F ; ducatur ad eam perpendicularis G A H , per A locum Ityli , entque hic communis ./Equatoris , & plani propofiti ie&io defiderata .…

Sundials -- Early works to 1800 · Horology -- Early works to 1800 · Perspective -- Early works to 1800 · Horology · Perspective · Sundials

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