John Zeleny

John Zeleny
Born	(1872-03-26)March 26, 1872[1] Racine, Wisconsin
Died	June 19, 1951 (aged 79)[2] New Haven, Connecticut
Nationality	American
Alma mater	University of Minnesota (B.S. 1892, Ph.D. 1906) University of Cambridge (B.A. 1899) Yale University (M.A. (honorary), 1915)
Known for	Zeleny electroscope electrospray ion mobility
Scientific career
Fields	Physicist
Institutions	University of Minnesota Yale University
Doctoral advisor	Henry T. Eddy
Other academic advisors	J. J. Thomson

John Zeleny (March 26, 1872 – June 19, 1951) was an American physicist who, in 1911, invented the Zeleny electroscope. He also studied the effect of an electric field on a liquid meniscus. His work is seen by some as a beginning to emergent technologies like liquid metal ion sources and electrospraying and electrospinning.^[3][4]

Zeleny was born in Racine, Wisconsin to a Czech immigrant couple from Křídla.^[5][6] He was the older brother of Charles Zeleny. He attended the University of Minnesota (B.S., 1892), followed by Trinity College, Cambridge (B.A., 1899), and the University of Minnesota (PhD, 1906).^[1] Zeleny began his teaching career at the University of Minnesota after earning his B.A. in 1892. Zeleny was an elected member of the American Academy of Arts and Sciences.^[7] He was elected to the American Philosophical Society in 1915.^[8] That same year, he joined the faculty at Yale, where he was chairman of the physics department and director of graduate studies in physics until his retirement in 1940.^[9]

References

1. Venn, John (2011). Alumni Cantabrigienses: A Biographical List of All Known Students, Graduates and Holders of Office at the University of Cambridge, from the Earliest Times to 1900. Cambridge University Press. p. 627. ISBN 978-1-108-03616-0. Retrieved 20 January 2020.
2. Connecticut Death Index, 1949-2012
3. Zeleny, John (1914). "The electrical discharge from liquid points, and a hydrostatic method of measuring the electric intensity at their surfaces". Physical Review. 3 (2): 69–91. Bibcode:1914PhRv....3...69Z. doi:10.1103/PhysRev.3.69.
4. Zeleny, John (1917). "Instability of electrified liquid surfaces". Physical Review. 10 (1): 1–6. Bibcode:1917PhRv...10....1Z. doi:10.1103/PhysRev.10.1.
5. 1920 United States Federal Census
6. "Actapublica - Matriky - Moravský zemský archiv Brno". actapublica.eu. Retrieved 2020-03-21.
7. "John Zeleny". American Academy of Arts & Sciences. 2023-02-09. Retrieved 2023-11-03.
8. "APS Member History". search.amphilsoc.org. Retrieved 2023-11-03.
9. "Noted Racine-Born Physicist, John Zeleny, 79, Dies at Yale". The Journal Times. Racine, Wisconsin. June 21, 1951. p. 4. Retrieved January 20, 2020.

External links

• Zeleny Electroscope