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astronomy

Otto Stern

Otto Stern is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Otto Stern rather than just read about it. In short: Otto Stern (German: [ˈɔto ˈʃtɛʁn] ; 17 February 1888 – 17 August 1969) was a German–American experimental physicist. He is the second most nominated person for a Nobel Prize, with 82 nominations during the years 1925–1945.

Otto Stern — main illustration
Otto Stern — illustration

Key takeaways

  • Otto Stern belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Otto Stern to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Otto Stern from memory before moving on to harder problems.

Reference excerpt

Otto Stern (German: [ˈɔto ˈʃtɛʁn] ; 17 February 1888 – 17 August 1969) was a German–American experimental physicist. He is the second most nominated person for a Nobel Prize, with 82 nominations during the years 1925–1945. In 1943, he received the Nobel Prize in Physics "for his contribution to the development of the molecular ray method and his discovery of the magnetic moment of the proton."

Biography

Otto Stern was born on 17 February 1888 in Sohrau (now Żory, Poland), Germany, into a Jewish family. In 1892, he moved with his parents to Breslau (now Wrocław, Poland). He studied in Freiburg im Breisgau, Munich, and Breslau. In 1912, Stern received his Ph.D. in Physical Chemistry from the University of Breslau, with a thesis on the kinetic theory of osmotic pressure in concentrated solutions. He then followed Albert Einstein to Charles University in Prague, and in 1913 to ETH Zurich, where he became a Privatdozent in Physical Chemistry. The following year, he moved to the University of Frankfurt am Main as a Privatdozent in Theoretical Physics. In 1921, he was appointed Associate Professor of Theoretical Physics at the University of Rostock, and then Professor of Physical Chemistry and director of the laboratory at the University of Hamburg in 1923. In 1930, Stern received an LL.D. from the University of California, Berkeley (UC Berkeley), where he was a frequent visiting professor during the 1930s, becoming close colleagues with members of the Berkeley faculty, including chemistry dean Gilbert Lewis, whom Stern would nominate for the Nobel Prize in Chemistry in 1933. After resigning from his post at the University of Hamburg in 1933 because of the Nazis' Machtergreifung (seizure of power), he found refuge in the city of Pittsburgh, becoming Professor of Physics at the Carnegie Institute of Technology. As an experimental physicist, Stern contributed to the discovery of spin quantization in the Stern–Gerlach experiment with Walther Gerlach in February 1922 at the Physikalischer Verein in Frankfurt am Main. With his life-long collaborator Immanuel Estermann, he demonstrated of the wave nature of atoms and molecules; measurement of atomic magnetic moments; discovery of the proton's magnetic moment; and development of the molecular beam method which is utilized for the technique of molecular beam epitaxy. After Stern retired from the Carnegie Institute of Technology in 1945, he moved to Berkeley, California. He was a regular visitor to the physics colloquium at UC Berkeley. He died of a heart attack on 17 August 1969 in Berkeley, at the age of 81. His niece was the crystallographer Lieselotte Templeton.

Recognition

Awards

Memberships

Commemoration The Stern–Gerlach Medal of the German Physical Society awarded for excellence in experimental physics is named after him and Gerlach.

See also List of German inventors and discoverers List of Jewish Nobel laureates

References

Sources Horst Schmidt-Böcking and Karin Reich: Otto Stern. Physiker Querdenker, Nobelpreisträger. Societäts-Verlag, Frankfurt am Main 2011, ISBN 978-3-942921-23-7. Toennies, J.P.; Schmidt-Böcking, H.; Friedrich, B.; Lower, J.C.A. (2011). "Otto Stern (1888–1969): The founding father of experimental atomic physics". Annalen der Physik. 523 (12): 1045–1070. arXiv:1109.4864. Bibcode:2011AnP...523.1045T. doi:10.1002/andp.201100228. S2CID 119204397. National Academy of Sciences - Otto Stern (englisch; PDF; 1,0 MB)

External links

Otto Stern, Nobel Luminaries – Jewish Nobel Prize Winners, on the Beit Hatfutsot-The Museum of the Jewish People Website. Otto Stern on Nobelprize.org Stern's publication on his molecular beam method Otto Stern School Frankfurt am Main, Germany

Illustrations

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

Worked examples

Example 1 — a first encounter with Otto Stern

Start with the simplest possible case. Write down what Otto Stern claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Otto Stern before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Otto Stern ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Otto Stern

In research
Otto Stern appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Otto Stern in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Otto Stern is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1888 births, 1969 deaths, 20th-century American physicists, so understanding it makes those chapters shorter.
In everyday life
Look for Otto Stern outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Otto Stern in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Otto Stern means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Otto Stern out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Otto Stern in simple terms?

Otto Stern (German: [ˈɔto ˈʃtɛʁn] ; 17 February 1888 – 17 August 1969) was a German–American experimental physicist. He is the second most nominated person for a Nobel Prize, with 82 nominations during the years 1925–1945.

Why does Otto Stern matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Otto Stern?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Otto Stern.

Tags

  • 1888 births
  • 1969 deaths
  • 20th-century American physicists
  • 20th-century German physicists
  • Academic staff of ETH Zurich
  • Academic staff of the University of Hamburg
  • Academic staff of the University of Rostock
  • Carnegie Mellon University faculty
  • Emigrants from Nazi Germany to the United States
  • Experimental physicists
  • German Nobel laureates
  • Goethe University Frankfurt alumni

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