engleski

Ruđer Josip Bošković and the 250th Anniversary of the Vienna Meridian Survey

Surveys of the Vienna meridian conducted 250 years ago are of historical importance because they were the first surveys of the kind in the former Austria-Hungary. The results of developing trigonometric networks were very significant for producing contemporary maps and cadastral plans. The surveys were led by Joseph Liesganig at request of Maria Theresa, on recommendation from Ruđer Josip Bošković. The trigonometric chain to be established and surveyed originates in Soběšice near Brno (now Czech Republic), passes through Vienna and Graz in Austria and central Slovenia, ending in Varaždin. Liseganig’s surveys of the Vienna meridian are especially important for Croatia because it was the first time in history that a trigonometric point was established and surveyed in Croatia. The paper briefly describes the life and work of Ruđer Bošković, who was proclaimed the European geodesist of the year 2016. It emphasizes his role in proposing the Vienna meridian survey. The trigonometric chain is represented which was established to enable the Vienna meridian survey with special emphasis on the first four points in the Czech Republic which the author visited in December 2015 and the last three points, including the cathedral in Varaždin.

Joseph Liesganig ; Ruđer Bošković ; Vienna meridian

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