Daniel Gralath (30 May 1708 – 23 July 1767) was a physicist and a mayor of Danzig.
Gralath was born in Danzig (Gdańsk) in Polish–Lithuanian Commonwealth into a well-to-do trade family. He had studied law and philosophy in Halle, then in Leyden and Marburg from 1728 to 1734. Later he became councilman and, in 1763, mayor of Danzig. His father-in-law was Jacob Theodor Klein (1685–1759), a city secretary and also a very distinguished scientist, nicknamed Gedanensium Plinius. He died in Danzig.
As a physicist, Gralath worked on electricity, founded the Danzig Research Society, and repeated the experiments of Ewald Georg von Kleist with the Leyden jar. Gralath improved the design and demonstrated its effects on a chain of 20 persons. He was also the first to combine several jars to make a battery, but that claim is disputed. From 1747 to 1756, he published his "History of Electricity" in three parts in issues of Versuche und Abhandlungen der Naturforschende Gesellschaft in Danzig, which may have contributed to the historical judgement that he was the first to combine several Leyden jars.
- Wißner, Adolf (1964). "Gralath, Daniel der Ältere". Neue Deutsche Biographie. 6. p. 736.
- Mottelay, P. F. (1891). "Chronological History of Electricity, Galvanism, Magnetism and the Telegraph from B. B.. 2637 to A. D. 1888 -- Part I". The Electrical World. 18 (5): 77–79.
- Benjamin, Park (1895). A History of Electricity: (The Intellectual Rise in Electricity) from Antiquity to the Days of Benjamin Franklin. J. Wiley & Sons. pp. 522–524.
- Allerhand, A. (2018). "Who invented the earliest capacitor bank ("battery" of Leyden jars)? It's complicated". Proceedings of the IEEE. 106 (3): 501. doi:10.1109/JPROC.2018.2795846.
- Heilbron, J. L. (1982). Elements of Early Modern Physics. University of California Press. p. 256. ISBN 978-0-520-04555-2.
- Allerhand, A. (2018). "Who invented the earliest capacitor bank ("battery" of Leyden jars)? It's complicated". Proceedings of the IEEE. 106 (3): 502. doi:10.1109/JPROC.2018.2795846.
- Januszatjis, Anrezej (2001). "Scientists in Old Gdansk: 17th and 18th Centuries" (PDF). TASK Quarterly. 5 (3): 389–399.
- Schumann, Eduard (1898). "Der Bürgermeister Daniel Gralath, der Stifter der Naturhistorischen Gesellschaft in Danzig". Schriften der Naturforschenden Gesellschaft in Danzig. 6. pp. 192–205.
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