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| name        = Wilhelm Wien
| image        = Wilhelm Wien 1911.jpg
| image_size  = 180px
| birth_name  = Wilhelm Carl Werner Otto Fritz Franz Wien
| birth_date  = {{birth date|1864|1|13|df=y}}
| birth_place  = Gaffken near [[Fischhausen]], [[Province of Prussia]]
| death_date  = {{death date and age|1928|8|30|1864|1|13|df=y}}
| death_place  = [[Munich]], [[Weimar Republic|Germany]]
| spouse      = Luise Mehler (1898)
| nationality  = German
| field        = [[Physics]]
| workplaces  = [[University of Giessen]]<br>[[University of Würzburg]]<br>[[University of Munich]]<br>[[RWTH Aachen]]<br>[[Columbia University]]
| alma_mater  = [[University of Göttingen]]<br>[[University of Berlin]]
| doctoral_advisor  = [[Hermann von Helmholtz]]
| doctoral_students = [[Karl Hartmann]]<br/>[[Gabriel Gabrielsen Holtsmark|Gabriel Holtsmark]]<br/>[[Eduard Rüchardt]]
| known_for    = [[Blackbody radiation]]<br/>[[Wien's displacement law]]
| prizes      = [[Nobel Prize for Physics]] (1911)
}}
 
'''Wilhelm Carl Werner Otto Fritz Franz Wien''' ({{IPA-de|ˈviːn|lang}}; 13 January 1864 – 30 August 1928) was a German [[physics|physicist]] who, in 1893, used theories about [[heat]] and [[electromagnetism]] to deduce [[Wien's displacement law]], which calculates the [[Emission (electromagnetic radiation)|emission]] of a [[blackbody]] at any temperature from the emission at any one reference temperature.
 
He also formulated an expression for the black-body radiation which is correct in the [[photon-gas]] limit. His arguments were based on the notion of [[adiabatic invariant|adiabatic invariance]], and were instrumental for the formulation of [[quantum mechanics]]. Wien received the 1911 Nobel Prize for his work on [[heat radiation]].
 
==Biography==
 
===Early years===
Wien was born at Gaffken near Fischhausen, [[Province of Prussia]] (now Primorsk, Russia) as the son of landowner [[Carl Wien]]. In 1866, his family moved to [[Smokowo, Warmian-Masurian Voivodeship|Drachstein]] near [[Kętrzyn|Rastenburg]] (Rastembork).
 
In 1879, Wien went to school in Rastenburg and from 1880-1882 he attended the city school of [[Heidelberg]]. In 1882 he attended the [[University of Göttingen]] and the [[University of Berlin]]. From 1883-85, he worked in the laboratory of [[Hermann von Helmholtz]] and, in 1886, he received his [[Doctor of Philosophy|Ph.D.]] with a thesis on the diffraction of [[light]] upon metals and on the influence of various materials upon the [[color]] of refracted light.
From 1896 to 1899, Wien lectured at [[RWTH Aachen University]].
In 1900 he went to the [[University of Würzburg]] and became successor of [[Wilhelm Conrad Röntgen]].
 
===Career===
In 1896 Wien empirically determined a distribution law of [[blackbody radiation]], later named after him: [[Wien approximation|Wien's law]]. [[Max Planck]], who was a colleague of Wien's, did not believe in empirical laws, so using electromagnetism and thermodynamics, he proposed a theoretical basis for Wien's law, which became the [[Wien-Planck law]]. However, Wien's law was only valid at high frequencies, and underestimated the radiancy at low frequencies. Planck corrected the theory and proposed what is now called [[Planck's law]], which led to the development of [[Quantum mechanics|quantum theory]]. However, Wien's other empirical formulation <math>\lambda_{\mathrm{max}} T = constant</math>, called [[Wien's displacement law]], is still very useful, as it relates the peak wavelength emitted by a body (''λ''<sub>max</sub>), to the temperature of the body (T). In 1900 (following the work of [[George Frederick Charles Searle]]), he assumed that the entire mass of matter is of electromagnetic origin and proposed the formula <math>m=(4/3)E/c^2</math> for the relation between electromagnetic mass and electromagnetic energy.
 
While studying streams of [[ionized gas]], Wien, in 1898, identified a positive particle equal in mass to the [[hydrogen]] [[atom]]. Wien, with this work, laid the foundation of [[mass spectrometry]]. [[J. J. Thomson]] refined Wien's apparatus and conducted further experiments in 1913 then, after work by [[Ernest Rutherford]] in 1919, Wien's particle was accepted and named the [[proton]]. During April 1913, Wien was a lecturer at [[Columbia University]].<ref>"Neuere Probleme der theoretischen Physik". http://www.abebooks.com/servlet/BookDetailsPL?bi=514609244&searchurl=tn%3DNeuere%2BProbleme%2Bder%2Btheoretischen%2BPhysik</ref>
 
In 1911, Wien was awarded the [[Nobel Prize in Physics]] "for his discoveries regarding the laws governing the radiation of heat."<ref>"The Nobel Prize in Physics 1911". Nobelprize.org. 30 Nov 2011 http://www.nobelprize.org/nobel_prizes/physics/laureates/1911/</ref>
 
==See also==
*[[Wien's distribution law]]
*[[History of special relativity]]
*[[Mass–energy equivalence]]
 
==Publications==
{{Wikisourcelang|de}}
{{Wikisourceauthor}}
 
*{{Cite journal
|author=Wien, Wilhelm
|year=1898
|title=[[s:de:Translatorische Bewegung des Lichtäthers|Wikisource: Ueber die Fragen, welche die translatorische Bewegung des Lichtäthers betreffen]]
|journal=Annalen der Physik
|volume=301
|issue=3
|pages=I–XVIII}}
 
*''Lehrbuch der Hydrodynamik'' (1900)
 
*{{Cite journal
|author=Wien, Wilhelm
|year=1900
|title=[[s:de:Über die Möglichkeit einer elektromagnetischen Begründung der Mechanik|Wikisource: Über die Möglichkeit einer elektromagnetischen Begründung der Mechanik]]
|journal=Annalen der Physik
|volume=310
|issue=7
|pages=501–513
|doi=10.1002/andp.19013100703|bibcode = 1901AnP...310..501W }}
 
*{{Cite journal
|author=Wien, Wilhelm
|year=1904a
|title=[[s:de:Differentialgleichungen der Elektrodynamik I|Wikisource: Über die Differentialgleichungen der Elektrodynamik für bewegte Körper. I]]
|journal=Annalen der Physik
|volume=318
|issue=4
|pages=641–662
|doi=10.1002/andp.18943180402|bibcode = 1904AnP...318..641W }}
 
*{{Cite journal
|author=Wien, Wilhelm
|year=1904b
|title=[[s:de:Differentialgleichungen der Elektrodynamik II|Wikisource: Über die Differentialgleichungen der Elektrodynamik für bewegte Körper. II]]
|journal=Annalen der Physik
|volume=318
|issue=4
|pages=663–668
|doi=10.1002/andp.18943180403|bibcode = 1904AnP...318..663W }}
 
*{{Cite journal
|author=Wien, Wilhelm
|year=1904c
|title=[[s:de:Erwiderung auf die Kritik des Hrn. M. Abraham|Wikisource: Erwiderung auf die Kritik des Hrn. M. Abraham]]
|journal=Annalen der Physik
|volume=319
|issue=8
|pages=635–637
|doi=10.1002/andp.19043190817|bibcode = 1904AnP...319..635W }}
 
*{{Cite journal
|author=Wien, Wilhelm
|year=1904d
|title=[[s:de:Zur Elektronentheorie|Wikisource: Zur Elektronentheorie]]
|journal=Physikalische Zeitschrift
|volume=5
|issue=14
|pages=393–395}}
 
*''Aus dem Leben und Wirken eines Physikers'' (1930, memoir)
 
==References==
* {{cite journal | title=Zur Erinnerung an Wilhelm Wien bei der 25. Wiederkehr seines Todestages | author=E. Rüchardt | journal=Naturwissenschaften | volume=42 | issue=3 | pages=57–62 | year=1955 | url=| doi=10.1007/BF00589524|bibcode = 1955NW.....42...57R }}
* {{cite journal | title=Zur Entdeckung der Kanalstrahlen vor fünfzig Jahren | author=E. Rüchardt | journal=Naturwissenschaften | volume=24 | issue=30 | pages=57–62 | year=1936 | url=| doi=10.1007/BF01473963|bibcode = 1936NW.....24..465R }}
{{Reflist}}
 
==External links==
{{commons|Wilhelm Wien}}
* [http://www.nobel-winners.com/Physics/wilhelm_wien.html Wilhelm Wien]
* {{MacTutor Biography|id=Wien}}
 
{{Nobel Prize in Physics Laureates 1901-1925}}
{{Scientists whose names are used in physical constants}}
 
{{Authority control|VIAF=5029509 |GND=118767844 }}
 
{{Persondata<!-- Metadata: see [[Wikipedia:Persondata]] -->
|NAME= Wien, Wilhelm
|ALTERNATIVE NAMES=
|SHORT DESCRIPTION= [[Physicist]]
|DATE OF BIRTH= January 13, 1864
|PLACE OF BIRTH= [[Fischhausen]], [[Prussia|East Prussia]]
|DATE OF DEATH= August 30, 1928
|PLACE OF DEATH=  [[Munich]], [[Germany]]
}}
{{DEFAULTSORT:Wien, Wilhelm}}
[[Category:German physicists]]
[[Category:University of Göttingen alumni]]
[[Category:Humboldt University of Berlin alumni]]
[[Category:Nobel laureates in Physics]]
[[Category:German Nobel laureates]]
[[Category:People from Kętrzyn]]
[[Category:People from the Province of Prussia]]
[[Category:RWTH Aachen University faculty]]
[[Category:University of Würzburg faculty]]
[[Category:1864 births]]
[[Category:1928 deaths]]
[[Category:Theoretical physicists]]

Latest revision as of 00:53, 21 December 2014

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Today, thanks to new surgical techniques that spare the nerves and vessels feeding the penis, erectile dysfunction is far from inevitable. Who think that even though we're writing about the internet, we should still make an effort to be entertaining and erudite. The Sex-related Guidance Organization has useful factsheets on all of this. The difference between the two types of impotence is in the frequency of occurrence of the impotency episodes. Guys who have achieved this are invaluable to research because they have served as the missing control group in studies; those without the effects of internet pornography: Previously, researchers couldn't find ANY guys who were not surfing pornography.

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