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Reino Antero Hirvonen (1908–1989) was a fa … Reino Antero Hirvonen (1908–1989) was a famousFinnish physical geodesist, also well known forcontributions in mathematical and astronomical geodesy. He worked at first at the Finnish Geodetic Institute under W.A. Heiskanen on gravimetric geoid determination, publishing his dissertation The Continental Undulations of the Geoid in 1934 on the determination of a global geoid model from only 4500 data points. In 1950 he succeeded Heiskanen as Professor of Geodesy at the Helsinki University of Technology. He also took an active interest in astronomy, acting from 1956 to 1964 as avice president of the Finnish amateur astronomical society Ursa. R.A. Hirvonen participated in the 1930s in the construction of triangulation towers, and measurements, for the first order triangulation of Finland. He also developed over the years many new mathematical algorithms for manual calculations (before the computer era), e.g., for calculating the Gauss-Krüger map projection. In 1947 he led a team of Finnish scientists to Brazil to measure the distance between South America and Africa. (T.J. Kukkamäki was the leader of the team sent to, then, Gold Coast, Africa.) They succeed with measurements using a method based on observing from points in Brazil and Africa. They used the solar eclipse happening that year, which was visible in both Africa and South America. Using long focus film cameras and the most accurate available radio time signals for the solar eclipse measurements, they were able to calculate the distance between Africa and South America to a higher accuracy than ever before: 141 m. 1951–1952 and 1954–1955 Hirvonen lectured in the Department of Geodetic Science at The Ohio State University, in Columbus, Ohio (USA). He educated the students about navigation using the stars as reference points. Later it helped the USA to fly to the moon.ater it helped the USA to fly to the moon.
, Reino Antero Hirvonen, född 14 november 19 … Reino Antero Hirvonen, född 14 november 1908 i Nyslott, död 16 augusti 1989 i Helsingfors, var en finländsk geodet. Hirvonen, som var son till domkapitelsvaktmästare Simo Hirvonen och Wendla Emilia Paavilainen, blev student 1926, filosofie kandidat 1931, filosofie magister 1932, filosofie licentiat 1934 och filosofie doktor 1936. Han blev tillförordnad yngre statsgeodet 1933, ordinarie 1938, lektor i geodesi vid Tekniska högskolan samma år och var professor där 1950–1975. Han var docent vid Helsingfors universitet 1939–1962 samt gästprofessor och research associate vid Ohio State University från 1951. Han var huvudredaktör för tidskriften Maanmittaus 1952, förman för Finlands akademiska idrottsförbund 1956–1961 samt ordförande i Kansan Raamattuseuran säätiö och Vivamosäätiö från 1965.useuran säätiö och Vivamosäätiö från 1965.
, Reino Antero Hirvonen (1908 – 1989) foi um famoso Geodesistas físico finlandês, também muito conhecido pelas suas contribuições na Geodésia Matemática e astrônoma. Ele trabalhou no primeiro Institudo Geodésico Finlandês.
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Reino Antero Hirvonen, född 14 november 19 … Reino Antero Hirvonen, född 14 november 1908 i Nyslott, död 16 augusti 1989 i Helsingfors, var en finländsk geodet. Hirvonen, som var son till domkapitelsvaktmästare Simo Hirvonen och Wendla Emilia Paavilainen, blev student 1926, filosofie kandidat 1931, filosofie magister 1932, filosofie licentiat 1934 och filosofie doktor 1936. Han blev tillförordnad yngre statsgeodet 1933, ordinarie 1938, lektor i geodesi vid Tekniska högskolan samma år och var professor där 1950–1975. Han var docent vid Helsingfors universitet 1939–1962 samt gästprofessor och research associate vid Ohio State University från 1951. Han var huvudredaktör för tidskriften Maanmittaus 1952, förman för Finlands akademiska idrottsförbund 1956–1961 samt ordförande i Kansan Raamattuseuran säätiö och Vivamosäätiö från 1965.useuran säätiö och Vivamosäätiö från 1965.
, Reino Antero Hirvonen (1908–1989) was a fa … Reino Antero Hirvonen (1908–1989) was a famousFinnish physical geodesist, also well known forcontributions in mathematical and astronomical geodesy. He worked at first at the Finnish Geodetic Institute under W.A. Heiskanen on gravimetric geoid determination, publishing his dissertation The Continental Undulations of the Geoid in 1934 on the determination of a global geoid model from only 4500 data points. In 1950 he succeeded Heiskanen as Professor of Geodesy at the Helsinki University of Technology. at the Helsinki University of Technology.
, Reino Antero Hirvonen (1908 – 1989) foi um famoso Geodesistas físico finlandês, também muito conhecido pelas suas contribuições na Geodésia Matemática e astrônoma. Ele trabalhou no primeiro Institudo Geodésico Finlandês.
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Reino Antero Hirvonen
, Reino Hirvonen
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