Title page of 'Experimenta Nova, ut vocant, Magdeburgica, de vacuo Spatio', (Amsterdam, 1672). ('New Magdeburgian Experiments, as they are called, relating to a Vacuum') in which Otto von Guericke (1606-1686), German inventor, engineer and physicist, published details of his invention of the air pump, 1650, and his experiments on the power of a vacuum.  Engraving.