Otto von Guericke was a German scientist and politician who is best known for his contributions to the study of vacuum, electricity, and magnetism.
Born in Magdeburg, Germany, von Guericke was the son of a wealthy merchant. He was educated at the University of Leipzig, where he studied law, philosophy, and mathematics. In 1626, he returned to Magdeburg and became a member of the city council.
Von Guericke's scientific experiments began in the 1640s when he began to investigate the properties of air and the phenomenon of vacuum. He famously demonstrated the power of atmospheric pressure by using his newly-invented air pump to remove the air from two metal hemispheres, which were then held together only by the force of atmospheric pressure. He also used the air pump to perform experiments on sound, demonstrating that sound cannot travel through a vacuum.
In addition to his work on vacuum, von Guericke also made important contributions to the study of electricity and magnetism. He invented the first electrical machine, a simple device that generated static electricity by rubbing a ball of sulfur against a piece of cloth. He also conducted experiments on magnetism, demonstrating that a compass needle aligns itself with the Earth's magnetic field.
Von Guericke's contributions to science were widely recognized during his lifetime. He was elected to the Royal Society of London in 1663, and he was also a member of the Académie des sciences in Paris. In addition to his scientific work, von Guericke was also an important political figure in Magdeburg. He served as the city's mayor for several terms and played a key role in negotiating the city's surrender to the Swedish army during the Thirty Years' War.
Otto von Guericke died in Hamburg in 1686, at the age of 84. His legacy as a scientist and a statesman is still celebrated today.