LEONARDO DA VINCI 1452-1519

Leonardo da VINCI Vinci, 1452–Amboise, 1519 Botany: Star of Bethlehem; Wood Anemone; Sun Spurge Pen and brown ink, red chalk About 1505–1510 The ornithogalum umbellatum (or Star of Bethlehem) on this sheet from the CodexWindsor appears in certain copies of Leda. The Royal Collection, Windsor, RL 12424, loaned by Her Majesty Queen Elizabeth II 0 96 Leonardo da VINCI Vinci, 1452–Amboise, 1519 Fluid mechanics Left-hand page: The Phenomena of Whirlpools Right-hand page: The Interference of Circular Waves Pen and brown ink About 1490–1492 On these two pages from Manuscript A, Leonardo attempts to analyse the spirals of whirlpools and the interference of two circular waves on the surface of still water. Institut de France, Paris, Manuscript A, fol. 60v–61r. 0 97