Gyorgy Bacsak

* Bratislava, June 5, 1870 – † Fonyód, March 4, 1970 / legal advisor, astronomer, geologist ; ; His father, Pál Bacsák, was the vice-governor of Bratislava County. In Bratislava, he was a student of Frigyes Dohnányi. Here he became acquainted with celestial mechanics. He earned a doctorate from the Faculty of Law of the Budapest University of Science and Technology. He also studied painting in Munich. He studied astronomy as an autodidact. With great mathematical preparation and a broad-sighted geologists' perspective, he tried to recognize and explain the laws of motion of celestial mechanics and the connections between the Pleistocene ice ages. Starting from the theory of Milutin Milanković (1879–1958), he determined the glaciation waves of the past 600 thousand years, and then one million years, from the changes in the Earth's orbital elements. He developed the theory of the stability points and periods of orbital elements. He published the results of his scientific work from the age of 70. Only six of his papers were published. In these, he deciphered the causes of the glaciations of the past six hundred thousand years, explained the mechanism of their formation, using all the material antecedents: the results of recent geological research, taking into account celestial mechanical calculations and evaluations, and revised the series of celestial mechanical glaciation theories. His table shows that during the 600,000 years there were 22 glacial climate oscillations, the total duration of which was 156,500 years. However, there were 20 subtropical, 20 antiglacial and 23 subarctic climates. We can also learn from the Bacsák table that we are currently living in an interglacial between two ice ages, which lasts approx. It began 10 thousand years ago and will continue for about 70 thousand years. He also carried out archaeological excavations around Lake Balaton, where he spent most of his life. Among other things, he is credited with the discovery of the pile dwellings in Berek. He was also considered a prominent painter, and his works were presented at numerous exhibitions. A square in Fonyód was named after him and the Bacsák György Vocational School operates in the city. ; ; His main works: ; The effect of the Scandinavian glaciation on the periglacial belt, 1942, ; The history of the last 600,000 years of the earth, 1944, ; The Pliocene and Pleistocene in the light of celestial mechanics, 1955.