entitled "On the calculation of Fraunhofer's diffraction phenomena with special consideration of the theory of diffraction in the heliometer". Ernst Abbe had inspired him to write this topic.

Career

In April 1889, Straubel took on an assistant position at the University of Jena.In 1893 he qualified as a professor: "Theory of the diffraction phenomena of circular, non-spherical waves". In 1997, Straubel was appointed associate professor.

One of the consequences of the "German Geographers' Day" conference held in Jena

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