while at school, since it was not his mother tongue. Petzvals contemporaries widely accepted that he was Hungarian, as Petzval always proclaimed. "He lived 54 years of his life in Vienna, but could not become, and did not become a Viennese - devotedly to his native country, he remained a Hungarian." - told Lueger, mayor of Vienna, at Petzval's burial. Works Bericht über die Ergebnisse einiger dioptrischen Untersuchungen (Pest, 1843) Eigenschaften einer guten Camera-Obscura (Wien, 1847) Integration der linearen Differenzialgleichungen mit Constanten und veränderlichen Coefficienten, I–II. (Wien, 1853–1859) Berichte über optische Untersuchungen (Wien, 1857) Über das neue Landschaft – als Fernobjektiv (Wien, 1858) Theorie der Störungen der Stützlinien (bei Gewölben und Hängebrücken) (Leipzig, 1904–1905) Theorie der Tonsysteme (Leipzig, 1904–1905) Aus den Vorlesungen über Ballistik. Ein Beitr. zur Geschichte der Ballistik (Leipzig, 1908) References External links Article on Petzval Lenses József Petzvál www.info.omikk.bme.hu Jozef Petzval Award Jozef Petzval Medal Joseph Petzval at Monoskop.org 1807 births 1891 deaths People from Spišská Belá People from the Kingdom of Hungary Carpathian German people Hungarian-German people Hungarian engineers Ballistics experts Hungarian inventors 19th-century Hungarian physicists Lens designers 19th-century Hungarian mathematicians