Free Republic

Leonardo da Vinci's drawing of a male figure perfectly inscribed in a circle and square, known as the "Vitruvian Man," illustrates what he believed to be a divine connection between the human form and the universe. Beloved for its beauty and symbolic power, it is one of the most famous images in the world. However, new research suggests that the work, which dates to 1490, may be a copy of an earlier drawing by Leonardo's friend. Another illustration of a divinely proportioned man — the subject is Christ-like, but the setting is strikingly similar to Leonardo's — has been discovered...

The Antikythera mechanism was an arrangement of calibrated differential gears inscribed and configured to produce solar and lunar positions in synchronization with the calendar year. By rotating a shaft protruding from its now-disintegrated wooden case, its owner could read on its front and back dials the progressions of the lunar and synodic months over four-year cycles. He could predict the movement of heavenly bodies regardless of his local government's erratic calendar. From the accumulated inscriptions and the position of the gears and year-ring, Price deduced that the device was linked closely to Geminus of Rhodes, and had been built on...