Overview Level of Folio 177 v


Size Height 292 mm, width 202 mm.
Watermark Eagle encircled with crown outside. Drake's identification: Watermark type 19. Drake's description: Speadeagle in 37mm circle, crown above. Watermark found in 1617-26. Found in manuscripts 1611-13 (notes on floating body controversy), 1624 (horoscope).
Comments Written by Arrighetti; contains text, drawing. Copied from folio 180r. Relation to the Discorsi: of 2/09-th-rightangle.
References Drake 1978 479
Folio 177 v (final text)
1A Si ex eodem puncto orizontis duca[n]tur perpendiculus et planum inclinatum, et in plano inclinato sumatur quodlibet punctum, a quo ipsi plano perpendicularis linea usque ad perpendiculum protrahatur, lationes in parte perpendiculi inter orizontem et occursum perpendicularis intercepta, et in parte plani inclinati inter eandem perpendicularem et orizontem intercepta, eodem tempore absolventur.
1B Sint ex eodem puncto c orizontis ab perpendiculus cd et planum inclinatum ce, et in ce sumpto quolibet puncto f, ex eo ad ec perpendicularis agatur fg, occurrens perpendiculo in puncto g: dico, lationes per cg et per cf eodem tempore confici. Demictatur ex eodem puncto f perpendicularis ad orizontem fh, quae erit perpendiculo cd parallela, et angulus hfc coalterno fcg aequalis, et rectus chf recto cfg: quare aequiangula erunt triangula chf, cfg, et ut hf ad fc, ita fc ad cg; ut autem hf ad fc, ita momentum gravitatis mobilis in plano ce ad totale suum momentum in perpendiculo cd. Habet igitur distantia cf ad distantiam cg eandem rationem quam gravitatis momentum super plano ce ad totale momentum per perpendiculum cg , quare eodem tempore conficientur lationes per cf et cg.


Overview Level of Folio 177 v