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Otto Stern

From Wikipedia, the free encyclopedia
German-American physicist (1888–1969)
Otto Stern was also the pen name of German women's rights activistLouise Otto-Peters (1819–1895).

Otto Stern
Stern, 1940s
Born(1888-02-17)17 February 1888
Died17 August 1969(1969-08-17) (aged 81)
Alma mater
Known forPerforming theStern–Gerlach experiment (1922)
RelativesLieselotte Templeton (niece)
AwardsNobel Prize in Physics (1943)
Scientific career
Fields
Institutions
Doctoral advisorOtto Sackur

Otto Stern (German:[ˈɔtoˈʃtɛʁn]; 17 February 1888 – 17 August 1969) was a German-Americanphysicist. He is the second most nominated person for aNobel Prize, with 82 nominations during the years 1925–1945.[1] In 1943, he received theNobel Prize in Physics "for his contribution to the development of themolecular ray method and his discovery of themagnetic moment of theproton".

Biography

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Plaque on the wall of what are now the physics institutes of Hamburg University, commemorating Stern's tenure

Stern was born into a Jewish family in Sohrau (nowŻory) in theProvince of Silesia, theGerman Empire'sKingdom of Prussia. His father was Oskar Stern (1850–1919), a mill owner, who had been living in Breslau (nowWrocław) since 1892. His mother Eugenia née Rosenthal (1863–1907) was from Rawitsch (nowRawicz) in the PrussianProvince of Posen. Otto Stern had a brother, Kurt, who became a noted botanist inFrankfurt, and three sisters. He studied inFreiburg im Breisgau,Munich and Breslau.[2]

Stern completed his studies at theUniversity of Breslau in 1912 with a doctoral dissertation in physical chemistry[2] under supervision ofOtto Sackur on the kinetic theory of osmotic pressure in concentrated solutions.[3] He then followedAlbert Einstein toCharles University in Prague and in 1913 toETH Zurich. Stern served in World War I doing meteorological work on the Russian front while still continuing his studies and in 1915 received hisHabilitation at theUniversity of Frankfurt. In 1921 he became a professor at theUniversity of Rostock which he left in 1923 to become director of the newly foundedInstitut für Physikalische Chemie at theUniversity of Hamburg.

In 1930, Stern received an LL.D. degree fromBerkeley,[4] where he was a frequent visiting professor during the 1930s, becoming close colleagues with members of the Berkeley faculty, including chemistry deanGilbert Lewis, whom Stern would nominate for theNobel Prize in Chemistry in 1933.[1][3] After resigning from his post at theUniversity of Hamburg in 1933 because of theNazis'Machtergreifung (seizure of power), he found refuge in the city ofPittsburgh becoming a professor ofphysics at theCarnegie Institute of Technology.[5]

As an experimental physicist Stern contributed to the discovery ofspin quantization in theStern–Gerlach experiment withWalther Gerlach in February 1922 at thePhysikalischer Verein inFrankfurt am Main.[6][7] With his life-long collaboratorImmanuel Estermann, he demonstrated of the wave nature ofatoms andmolecules; measurement ofatomicmagnetic moments; discovery of theproton'smagnetic moment; and development of themolecular beam method[8] which is utilized for the technique ofmolecular beam epitaxy.

He was awarded the 1943Nobel Prize in Physics, the first to be awarded since 1939. It was awarded to Stern alone, "for his contribution to the development of the molecular ray method and his discovery of the magnetic moment of the proton" (not for the Stern–Gerlach experiment). The 1943 prize was actually awarded in 1944.[9]

Stern was elected to the United StatesNational Academy of Sciences in 1945 and theAmerican Philosophical Society in 1946.[10][11]

After Stern retired from the Carnegie Institute of Technology, he moved toBerkeley,California. He was a regular visitor to the physics colloquium atBerkeley. He died of aheart attack in Berkeley on 17 August 1969.[3]

TheStern-Gerlach-Medaille of theDeutsche Physikalische Gesellschaft awarded for excellence in experimental physics is named after him and Gerlach.

His niece was the crystallographerLieselotte Templeton.[12]

See also

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References

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  1. ^ab"Otto Stern Nominations".nobelprize.org.
  2. ^abCharles W. Carey Jr. (1999). "Stern, Otto".American National Biography (online ed.). New York: Oxford University Press.doi:10.1093/anb/9780198606697.article.1301581. (subscription required)
  3. ^abc"Otto Stern"(PDF). National Academy of Sciences. Retrieved16 October 2017.
  4. ^"Otto Stern Biographical".nobelprize.org.
  5. ^"Pittsburgh Strong: Historic Tribute to a Vibrant Jewish Community".[permanent dead link]
  6. ^Gerlach, Walther; Stern, Otto (1922). "Das magnetische Moment des Silberatoms".Zeitschrift für Physik.9 (1):353–355.Bibcode:1922ZPhy....9..353G.doi:10.1007/BF01326984.S2CID 126109346.
  7. ^Friedrich, Bretislav; Herschbach Dudley (December 2003)."Stern and Gerlach: How a Bad Cigar Helped Reorient Atomic Physics".Physics Today. Archived fromthe original on 29 September 2007. Retrieved7 October 2007.
  8. ^Ramsey, N. F. (1988)."Molecular beams: our legacy from Otto Stern".Zeitschrift für Physik D.10 (2–3):121–125.Bibcode:1988ZPhyD..10..121R.doi:10.1007/BF01384845.ISSN 0178-7683.S2CID 120812185.
  9. ^"The Nobel Prize in Physics 1943". The Nobel Prize.
  10. ^"Otto Stern".www.nasonline.org. Retrieved22 March 2023.
  11. ^"APS Member History".search.amphilsoc.org. Retrieved22 March 2023.
  12. ^Otto Sterns gesammelte Briefe – Band 1 : Hochschullaufbahn und die Zeit des Nationalsozialismus. Schmidt-Böcking, Horst., Templeton, Alan., Trageser, Wolfgang. Berlin, Heidelberg. 14 June 2018.ISBN 9783662557358.OCLC 1047864732.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)

Sources

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External links

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