A member of the

von Kleist The House of Kleist is the name of an old and distinguished Pomeranian Prussian noble family, whose members obtained many important military positions within the Kingdom of Prussia and later in the German Empire. Notable members * Henning Alex ...

family, Ewald was born in Wicewo (Wicewo) in

Farther Pomerania Farther Pomerania, Hinder Pomerania, Rear Pomerania or Eastern Pomerania (german: Hinterpommern, Ostpommern), is the part of Pomerania which comprised the eastern part of the Duchy and later Province of Pomerania. It stretched roughly from the Od ...

. He studied

jurisprudence Jurisprudence, or legal theory, is the theoretical study of the propriety of law. Scholars of jurisprudence seek to explain the nature of law in its most general form and they also seek to achieve a deeper understanding of legal reasoning a ...

at the

University of Leipzig Leipzig University (german: Universität Leipzig), in Leipzig in Saxony, Germany, is one of the world's oldest universities and the second-oldest university (by consecutive years of existence) in Germany. The university was founded on 2 Decemb ...

and the University of Leyden and may have started his interest in electricity at the latter university under the influence of

Willem 's Gravesande Willem Jacob 's Gravesande (26 September 1688 – 28 February 1742) was a Dutch mathematician and natural philosopher, chiefly remembered for developing experimental demonstrations of the laws of classical mechanics and the first experimental m ...

. From 1722–1745 he was dean of the cathedral at Kamień Pomorski in the

Kingdom of Prussia The Kingdom of Prussia (german: Königreich Preußen, ) was a German kingdom that constituted the state of Prussia between 1701 and 1918. Marriott, J. A. R., and Charles Grant Robertson. ''The Evolution of Prussia, the Making of an Empire''. ...

, after which he became president of the royal court of justice in Koszalin. On 11 October 1745 he independently invented the Kleistian jar which could store electricity in large quantities. He communicated this discovery to a group of Berlin scientists in late 1745, and the news was transferred in a confused form to Leyden University where it was further investigated. This became more commonly known as the

Leyden jar A Leyden jar (or Leiden jar, or archaically, sometimes Kleistian jar) is an electrical component that stores a high-voltage electric charge (from an external source) between electrical conductors on the inside and outside of a glass jar. It typ ...

after graduate student

Pieter van Musschenbroek Pieter van Musschenbroek (14 March 1692 – 19 September 1761) was a Dutch scientist. He was a professor in Duisburg, Utrecht, and Leiden, where he held positions in mathematics, philosophy, medicine, and astronomy. He is credited with the inven ...

of Leyden.

References

1700 births 1748 deaths People from Tychowo 18th-century German lawyers 18th-century German inventors Deans (Christianity) 18th-century German Lutheran clergy 18th-century German physicists Ewald Georg People from the Province of Pomerania Leipzig University alumni Leiden University alumni {{Germany-physicist-stub