Celebrating Leonardo da Vinci

Some of the anatomical details that he sketched were so accurate that they were not verified scientifically until as recently as the 1980s. He was the author of notable studies such as Proportions of the Human Figure, a work often known simply as Vitruvian Man, which includes text on the squaring of the circle and the observation that the length of a human’s outstretched arms is typically equal to a person’s height.