Fotoeins Fotografie

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Posts tagged ‘Josef Stefan’

Josef Stefan, Arkadenhof, Universitaet Wien, University of Vienna, physicist, physics, Vienna, Wien, Oesterreich, Austria, fotoeins.com

Fotoeins Friday at Uni Vienna: Josef Stefan

Throughout the month, I’m highlighting notable physicists who’ve been memorialized within the Arcade Courtyard in the main building of the University of Vienna:

2 Apr: Lise Meitner;
9 Apr: Christian Doppler, Erwin Schrödinger;
16 Apr: Joseph Littrow, Karl Littrow;
23 Apr: Josef Stefan;
30 Apr: Ludwig Boltzmann.

These are all names whose work and discovery form the historical and scientific basis of my university education in the field of physics.


The memorial to Josef Stefan (Jožef Štefan) includes a small inscription:

Josef Stefan
Professor of physics, 1863-1893
Born 1835, died 1893

An important physics equation is the Stefan-Boltzmann Law, which describes how an object that absorbs all radiation falling on its surface emits radiative intensity I (radiation energy per unit time per unit area) that is proportional to the fourth power in temperature T; the other two quantities are constants: emissivity ε between 0 and 1, and the Stefan-Boltzmann constant σ.

Stefan-Boltzmann Law, physics, LaTeX, CodeCogs

Stefan-Boltzmann Law.

Both Stefan and Boltzmann are buried in Vienna’s Central Cemetery. Boltzmann’s gravestone includes his entropy equation. Stefan does not have his own grave; instead, his descendants in the Munk family have a gravestone.

The university’s historical main building is inside the city’s Old Town which has been inscribed as UNESCO World Heritage Site since 2001. I made the photo above on 16 May 2018 with a Fujifilm X70 fixed-lens prime and the following settings: 1/60-sec, f/3.2, ISO1000, and 18.5mm focal length (28mm full-frame equivalent). This post appears on Fotoeins Fotografie at fotoeins DOT com as https://wp.me/p1BIdT-iGt.

My Vienna: Zentralfriedhof (central cemetery)

Above/featured: The cemetery’s Gate 2 (2. Tor) designed by Max Hegele, who was Otto Wagner’s student and also responsible for the construction of the Fillgraderstiege steps in Mariahilf.

Where: Vienna Central Cemetery (Wiener Zentralfriedhof).
Who: Beethoven, Boltzmann, Falco, Lamarr, Schütte-Lihotzky, Strauss I and II.
Why: Cross-section of cultural and economic history for capital city and nation.

In Vienna, tram 71 begins in the Old Town; goes around the western half of the inner ring past City Hall, national Parliament, and the Opera House; and heads southeast to the city’s main cemetery or the Zentralfriedhof. There’s a saying particular to the city’s residents, a phrase which means they’ve died by “going to the end of the line.”

Sie haben den 71er genommen.
(“They took the 71.”)

( Click here for images and more )

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