Charles Henry Fuchs

* Bratislava, June 5, 1851 – † Bratislava, January 10, 1916 / mathematician, physicist, high school teacher ; ; son of Albert Fuchs (Lőcse) and brother of Tivadar Fuchs (Prešov). He completed his school studies in his hometown, then studied mathematics and physics at the University of Vienna, where he was a student of József Petzval (Szepesbéla), among others. After obtaining his teaching certificate (1877), he returned to Hungary. He taught first in Sopron, then in several secondary schools in the country (e.g. Bratislava, Pancsova, Arad, Brassó). His studies in physics and his practical years as a retoucher may have directed his attention to solving geodetic problems. In the theoretical field, he dealt with the determination of the shape of the Earth, the normal ellipsoid. He wrote a study on lenses, refraction, the eye and vision, and optical calculations. These studies, as well as his photogrammetric investigations and dissertations, laid the foundation for today's photogrammetry, and thus became one of the internationally recognized pioneers of the aerial photography that is now widespread. In 1895–1896, he conducted research on capillarity at the University of Budapest alongside Loránd Eötvös. From 1901, as a pensioner, he lived for science in Bratislava. His theoretical research and practical results in the field of terrestrial and aerial photogrammetry are outstanding among his many-sided work. A large part of his professional work was published in German-language journals. In addition, he left behind 22,000 sheets of studies, mainly concerning various issues of mathematics, natural sciences, and technology, which were collected by Dr. It was handed over to the Hungarian Academy of Sciences through the intervention of academician Antal Tárczy-Hornoch. During his lifetime, Károly Henrik Fuchs published more than 200 studies exclusively on the subject of photogrammetry. ; ; His main work: On the influence of capillary constants on chemical processes, 1889.