Feodossi Nikolaevich Krassovsky

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Feodossi Nikolaevich Krassovsky

Feodossi (Theodor) Nikolajewitsch Krassowski ( Russian Феодосий Николаевич Красовский ; * 14 September July / 26 September  1878 greg. In Galitsch , Russian Empire ; † October 1, 1948 in Moscow , Soviet Union ) was a Russian geodesist and mathematician in particular researched in the field of earth measurement and adjustment calculations.

In the West he was best known for the Krassowski ellipsoid calculated in the late 1930s , the parameters of which he published in 1940 (equator axis 6,378.210 km and earth flattening 1: 298.6). It was the most modern way of determining the mathematical figure of the earth at the time and was declared by the Soviet Union to be the computational basis for all land surveys in the Eastern Bloc at that time after the Second World War (some countries have now returned to the ED50 system).

Krassowski (often also written as Krassovsky or Krassowskij ) used many of the worldwide data available to him for these calculations, e.g. a. those of the Bessel ellipsoid , but with an emphasis on the networks of the Soviet Union. Therefore, its ellipsoid is particularly well adapted to the geometrical conditions of Eurasia (see also geoid and earth curvature ).

He died at the age of 70 in Moscow and was buried there in the Vvedenskoye cemetery .

Among his 100 or so other publications, some also concern Western research and surveying projects , including a. the geodetic Ostseering ( Baltic Ring ) and various reduction and compensation methods for earth measurements.

Honors

Krassowski received numerous honors. Including:

In 1970 the lunar crater Krasovskiy, lying on the far side of the earth , was named after him by the IAU .

Literature and Sources

  • Karl Ledersteger : Astronomical and Physical Geodesy . Volume V of the Jordan-Eggert- Kneissl series of books , Handbook of Surveying . JBMetzler publishing house, Stuttgart 1969.
  • WA Magnitsky , WW Browar, BP Shimbirew: Textbook theory of the figure of the earth . Moscow 1961 (Russian) and Publishing House for Construction (East Berlin) 1964.

Individual evidence

  1. a b Feodossi Nikolajewitsch Krassowski in smi44.ru ; accessed on December 18, 2018 (Russian)
  2. Is the earth a sphere? , In: Berliner Zeitung , June 8, 1952, p. 4