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A hand-coloured moveable paper disc for calcuating the motion of the moon
Plate 92 from the book Kunstformen der natur by Ernst Haeckel (Leipzig
Herne Hill
Two boys showing their father the carving of an alderman they have made from wood
Ptolemic System gullibility A hand-coloured moveable paper discPtolemic System, 1660 1661. The Ptolemaic or geocentric model has the Earth at the centre of the Universe with all the other bodies, including the Sun, orbiting around it. From the 16th century it was superseded by the heliocentric models proposed by Copernicus, Kepler and Galileo. From The Celestial Atlas, or The Harmony of the Universe (Atlas coelestis seu harmonia macrocosmica) by Andreas Cellarius, published by Johannes Janssonius, (Amsterdam 1660
