Public domain photo of a 3d object, Italy, free to use, no copyright restrictions image - Picryl description Public domain photograph of decorative design drawing, art decor, free to use, no copyright restrict More
Large diagram comprising concentric semicircles with parabolic lines; notes and sketches on six balance arms; sketches of an hydraulic device; notes on water. Image taken from f. 63v of Notebook ('The Codex Aru More