Origin of the IJS logo

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The Jožef Stefan Institute logo are letters IJS, written in 5-bit teleprinter code on punched tape.

The figure on the right is from the publication A look into the Jožef Stefan Institute 1949-1979 (in Slovene) written by Peter Likar and illustrated by Božo Kos.

Logotype IJS



5-bit teleprinter code emulator

The Stefan-Boltzmann law states that the energy flux density by a blackbody is proportional to the fourth power of its thermodynamic temperature; because of their similarity, the Greek letter Sigma (representing the Stefan-Boltzmann constant) can be replaced with the logo of the Institute "Jozef Stefan":

J. Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia, Telephone: +386 1 477 39 00
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