Otto von Guericke

Otto von Guericke (1602-1686), was a remarkable German scientist, inventor, and politician who famously demonstrated the immense power of atmospheric pressure and vacuums. While serving as the long-time mayor of Magdeburg, Guericke invented the world’s first vacuum air pump. In 1654, he conducted his famous Magdeburg hemispheres experiment, showing that two large, sealed copper spheres held together only by a vacuum could not be pulled apart by teams of horses. He also invented an early electrostatic generator that produced artificial sparks, and used a barometer to successfully forecast major weather changes. Guericke’s spectacular public demonstrations disproved the long-held Aristotelian belief that nature abhors a vacuum. His pioneering work on air pressure and thermodynamics laid the crucial groundwork for the invention of the steam engine, sparking the industrial revolution decades later.