Bifolium

Public domain photograph of 3d object, free to use, no copyright restrictions image - Picryl description.

Public domain photo of a golden object, Islamic art, free to use, no copyright restrictions image - Picryl description:

Public domain photo of a golden object, Islamic art, free to use, no copyright restrictions image - Picryl description:

Palaeontological observations; notes on the 'heart and soul', Man as 'model of the world', and generative processes of nature. Image taken from f. 156v of Notebook ('The Codex Arundel'). Written in Italian. Th More

Attributed to Egypt Public domain reproduction of illuminated medieval manuscript page, free to use, no copyright restrictions image - Picryl description

Public domain reproduction of illuminated manuscript page, classical or archaic, free to use, no copyright restrictions image - Picryl description.

The Allegory of the Cave. Image taken from f. 155 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd More

Public domain photograph of 3d object, free to use, no copyright restrictions image - Picryl description.

Public domain photo of a golden object, 14th century, free to use, no copyright restrictions image - Picryl description. The Beatus manuscript of King Ferdinand I, from San Isidoro de León, is a 10th-century i More

Public domain reproduction of illuminated manuscript page, classical or archaic, free to use, no copyright restrictions image - Picryl description. The Beatus manuscript of King Ferdinand I, from San Isidoro d More

Notes, diagrams and sketches on mechanics. Image taken from f. 31 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas More

Blank page. Image taken from f. 249 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arunde More

Notes, diagrams and mathematical calculations on 'caustic' pyramids, entitled 'presspectiva'. Image taken from f. 279 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection wa More

Notes and diagrams. Image taken from f. 203 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes and sketches showing the formation of landscapes by river erosion. Image taken from f. 161 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howa More

Notes and diagram on mechanics. Image taken from f. 9 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the More

Notes and diagrams on optics (c.1506-8 or 1508-10). Image taken from f. 244 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particular More

Notes and sketches on wind, entitled 'del vento'. Image taken from f. 276v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularl More

Notes and diagrams on mechanics (1503-05). Image taken from f. 32v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas More

Blank page. Image taken from f. 125 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arunde More

Short note upon the flight of birds, entitled 'uccello'; notes and sketches on mechanics. Image taken from f. 43 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was ama More

Notes, mathematical calculations and diagram entitled 'prespectiva', on 'caustic' pyramids, mechanics (with reference to Archimedes), astronomy and mechanics. Image taken from f. 279v of Notebook ('The Codex Ar More

Notes and diagrams on mechanics, concerning percussion and motion. Image taken from f. 90 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard fami More

Blank page. Image taken from f. 236 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arunde More

Notes, diagrams and sketch of turbulence produced by water flowing around the pillars of a bridge (c.1503-1506). Image taken from f. 175v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manu More

Notes and sketches on the construction of an elaborate instrument, the 'Sagoma', designed by Leonardo for manufacturing parabolic mirrors. Image taken from f. 252v of Notebook ('The Codex Arundel'). Written in More

Notes. Image taken from f. 205 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arundel (15 More

Notes on the mathematical definition of point, line and area, for the 'First Book on Water' ('Libro primo delle acque'). Image taken from f. 266 of Notebook ('The Codex Arundel'). Written in Italian. The Arun More

On the top, a note reporting: 'Mo. leonardo dd' 193 282' ('Maestro Lionardo do dè dare…'), not in Leonardo's hand, probably referring to the debts incurred by Leonardo with the Compagnia di S. Luca in Florence More

Notes and diagrams on mechanics. Image taken from f. 10 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, th More

Notes and diagrams on mechanics. Image taken from f. 106v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, More

Notes and diagram on optics, concerning the caustics of reflection. Image taken from f. 86 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard fam More

Notes and diagram. Image taken from f. 213v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes on mechanics and studies of the flight of birds. Image taken from f. 277 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particu More

Notes and diagrams on mechanics. Image taken from f. 11 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, th More

Notes and diagrams on mechanics and stereometry. Image taken from f. 75 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly T More

Notes and diagram. Image taken from f. 168v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes on streamflow regulation. Image taken from f. 58 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the More

Notes and diagram. Image taken from f. 189 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of More

Notes and diagrams on mechanics. Image taken from f. 117 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, t More

Notes. Image taken from f. 184v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arundel (1 More

Notes and crude sketches on the preparation of explosives and fuses (not in Leonardo's hand). Image taken from f. 259 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection wa More

Notes and diagrams. Image taken from f. 197v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl More

Notes on perspective (not in Leonardo's hand). Image taken from f. 101 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Th More

Notes and diagrams on the luminosity of the Moon, entitled 'Della luna'; notes and sketch of an egg. Image taken from f. 94v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collec More

Faint pencil notes on the itinerary of the 'Road to Orléans' from the city of Romorantin (by Francesco Melzi). Image taken from f. 270 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscr 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

Sketch plans for trenches, schematic sketch of a pulley, and study of walls for a terraced weir; sketch on Leonardo's studies on the erection of the virile member; notes on mechanics. Image taken from f. 282 of More

Notes and diagrams on mechanics. Image taken from f. 40v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, t More

Sketches of hinged lamps; notes on mechanics; mathematical calculations; geometrical sketches. Image taken from f. 283v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection More

Notes and diagrams on mechanics. Image taken from f. 66v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, t More

Notes, diagrams and mathematical calculations, entitled 'presspectiva', on 'caustic' pyramids (1515). Image taken from f. 280v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Coll More

Notes and diagrams on optics; a diagram including an architectural detail; a note on the flight of birds with a sketch of a bird flying. Image taken from f. 134 of Notebook ('The Codex Arundel'). Written in Ita More

Notes on mechanics, concerning percussion and motion. Image taken from f. 90v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particul More

Notes and diagrams on mechanics. Image taken from f. 83v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, t More

Five methods of preparing different kinds of glue, and the process of annealing iron, accompained by crude sketches (not in Leonardo's hand). Image taken from f. 260v of Notebook ('The Codex Arundel'). Written More

Blank page. Image taken from f. 53 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arundel More

Notes and rough diagrams. Image taken from f. 204 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd More

Notes and diagrams on mechanics. Image taken from f. 118 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, t More

Notes and diagrams on optics, concerning Alhazen's problem. Image taken from f. 49v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, pa More

Notes and diagrams. Image taken from f. 157v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl More

Notes on arithmetic. Image taken from f. 38v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl More

Notes and diagrams on mechanics. Image taken from f. 3v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, th More

Notes and a diagram on optics, concerning the caustics of reflection; drawing of a lathe designed to manufacture concave mirrors; mathematical calculations. Image taken from f. 84v of Notebook ('The Codex Arund More

Notes and diagrams. Image taken from f. 143 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes and diagram, entitled 'prespectiva', on 'caustic' pyramids. Image taken from f. 280 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard fami More

Notes on geometry. Image taken from f. 124v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes and schematic diagrams. Image taken from f. 191v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the More

Notes and schematic sketches on optics, describing the reflection of a tower in a body of water. Image taken from f. 98v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection More

Diagrams on geometry. Image taken from f. 107 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl More

Notes. Image taken from f. 173v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arundel (1 More

Notes on cosmology (upside-down); diagrams illustrating Leonardo's observations on the centre of gravity. Image taken from f. 266v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript More

Rough diagrams on geometry. Image taken from f. 104v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2 More

Notes and diagrams on mechanics. Image taken from f. 116v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, More

Blank page. Image taken from f. 130v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arund More

Notes and diagrams. Image taken from f. 146 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes (side-on). Image taken from f. 190v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of More

Notes and diagrams on the centre of gravity of a pyramid; notes on motion. Image taken from f. 65 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the How More

Notes and diagrams on the mathematical definition of point, line and area, for the 'First Book on water' ('Libro primo delle acque') (upside-down). Image taken from f. 267v of Notebook ('The Codex Arundel'). Wr More

Notes and diagrams on geometry. Image taken from f. 123 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, th More

Notes and diagrams on optics (reflection caustics) and geometry (conic sections). Image taken from f. 73 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by More

Notes and diagrams on mechanics. Image taken from f. 117v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, More

Notes and diagrams on mechanics. Image taken from f. 11v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, t More

Notes and diagrams on optics (caustics of reflection); mathematical calculations; household accounts (not in Leonado's hand). Image taken from f. 78v of Notebook ('The Codex Arundel'). Written in Italian. The More

Diagram on optics, concerning Alhazen's problem. Image taken from f. 46v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly More

"Note and diagram on geometry (proportional compass); diagram on mechanics; a sulphur-based formula; a sketch of Leonardo's observation of a dyeing boiler ('caldaia dei tessitori con poco fuoco')." Image taken More

Notes and diagrams on mechanics. Image taken from f. 238 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, t More

Notes and diagrams on mechanics (1508). Image taken from f. 2v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas How More

Tally of household bills (not in Leonardo's hand); planimetric course of River Arno (1504); notes and rough diagrams (upside-down). Image taken from f. 148v of Notebook ('The Codex Arundel'). Written in Italian More

Blank page. Image taken from f. 91v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arunde More

Blank page. Image taken from f. 21 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl of Arundel More

List of twenty books (or chapters) relating to Leonardo's plan to write a treatise on naval technology and streamflow regulation. Image taken from f. 45 of Notebook ('The Codex Arundel'). Written in Italian. T More

Notes and diagram on optics, concerning the caustics of reflection. Image taken from f. 86v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard fa More

Notes and diagrams on mechanics, entitled 'Del mobile essu motore'. Image taken from f. 43v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard fa More

Notes and diagrams. Image taken from f. 197 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes and diagrams on mechanics. Image taken from f. 7v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, th More

Notes and diagrams. Image taken from f. 216 of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, the 2nd Earl o More

Notes and diagrams on mechanics. Image taken from f. 111v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard, More

Notes and crude sketches on the process of producing saltpetre to prepare gunpowder (not in Leonardo's hand). Image taken from f. 259v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscr More

Notes and diagrams in perspective. Image taken from f. 182v of Notebook ('The Codex Arundel'). Written in Italian. The Arundel Manuscript Collection was amassed by the Howard family, particularly Thomas Howard More