Biography:James Franck: Difference between revisions

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{{Short description|Physicist associated with the Franck-Hertz experiment}}
{{Infobox scientist
{{Infobox scientist
| name = James Franck
| image = Biography_James_Franck.jpg
| image = Biography_James_Franck.jpg
| caption = James Franck
| caption = Franck
| name = James Franck
| birth_date = 26 August 1882
| birth_date = 1882
| birth_place = Hamburg, Germany
| death_date = 1964
| death_date = 21 May 1964
| death_place = Göttingen, West Germany
| fields = Physics
| fields = Physics
| work_institutions = University of Göttingen; University of Chicago
| work_institutions = University of Göttingen; University of Chicago
| known_for = Franck-Hertz experiment; quantized atomic excitation
| known_for = Franck-Hertz experiment; quantized atomic excitation
| awards = Nobel Prize in Physics (1925)
}}
}}


{{Short description|Physicist associated with the Franck-Hertz experiment}}
'''James Franck''' (1882-1964) was a German physicist known for the Franck-Hertz experiment, which gave experimental evidence for discrete atomic energy levels.
'''James Franck''' (1882-1964) was a German physicist known for the Franck-Hertz experiment, which gave experimental evidence for discrete atomic energy levels.


In the Quantum Collection, Franck is linked with atomic transitions and the experimental confirmation of quantized excitation energies.
== Franck-Hertz experiment ==
The Franck-Hertz experiment showed that atoms absorb energy in discrete amounts. Electrons passing through mercury vapor lost energy in steps corresponding to atomic excitation energies, supporting the quantum theory of atomic structure.


== See also ==
Franck shared the 1925 Nobel Prize in Physics with [[Biography:Gustav Hertz|Gustav Hertz]].
 
== Quantum Collection links ==
* [[Physics:Quantum atoms/transition]]
* [[Physics:Quantum atoms/transition]]
* [[Physics:Quantum atoms/energy level]]
* [[Physics:Quantum atoms/energy level]]
* [[Physics:Quantum Atomic structure and spectroscopy]]
== References ==
{{reflist|3}}
* {{Cite web |title=James Franck - Biographical |url=https://www.nobelprize.org/prizes/physics/1925/franck/biographical/ |publisher=Nobel Prize Outreach |access-date=2026-05-23}}
* {{Cite web |title=Franck-Hertz experiment |url=https://www.britannica.com/science/Franck-Hertz-experiment |website=Encyclopaedia Britannica |access-date=2026-05-23}}


{{Author|Harold Foppele}}
{{Author|Harold Foppele}}

Latest revision as of 08:33, 23 May 2026


James Franck
Franck
Franck
Born 26 August 1882
Hamburg, Germany
Died 21 May 1964
Göttingen, West Germany


Known for Franck-Hertz experiment; quantized atomic excitation
Awards Nobel Prize in Physics (1925)

James Franck (1882-1964) was a German physicist known for the Franck-Hertz experiment, which gave experimental evidence for discrete atomic energy levels.

Franck-Hertz experiment

The Franck-Hertz experiment showed that atoms absorb energy in discrete amounts. Electrons passing through mercury vapor lost energy in steps corresponding to atomic excitation energies, supporting the quantum theory of atomic structure.

Franck shared the 1925 Nobel Prize in Physics with Gustav Hertz.

References


Author: Harold Foppele