This year marks 175 years from the birth of Academician Prof. Dr. Ljubomir Klerić

Proposal of the Department of mining, geological and the systems science of the Academy of engineering sciences of Serbia to celebrate the anniversary of birth of this giant of Serbian science, in accordance to his creative opus and work, was supported by 11 reputable institutions: Academy of engineering sciences of Serbia, Mining institute Belgrade, Mathematics institute of Serbian academy of science and arts, Faculty of mechanical engineering Belgrade, Faculty of mining and geology Belgrade, Serbian society for mechanics, Serbian geological society, Geological survey of Serbia, Military тechnical institute Belgrade, Matica Srpska, National library of Serbia and Society of geological engineers and technicians of Serbia.

Address
Organizational body for celebration of the jubilee: jubilej.kleric@ribeograd.ac.rs

LJUBOMIR KLERIĆ (Subotica, June 29, 1844 – Beograd, January 21, 1910), graduate engineer of mining, university professor, one of the first academics of Serbian Royal Academy (SRA, today: Serbian Аcademy of Science and Arts), scientist, constructor, inventor, prominent mining and geology expert, the founder of the Serbian school of mechanical engineering and mechanics, warrior, minister of education, minister of economy, member of the Commission for forming the University of Belgrade etc.

ACADEMY OF ENGINEERING SCIENCES OF SERBIA

MINING INSTITUTE BELGRADE

MATHEMATICS INSTITUTE OF SERBIAN ACADEMY OF SCIENCE AND ARTS

FACULTY OF MECHANICAL ENGINEERING BELGRADE

FACULTY OF MINING AND GEOLOGY BELGRADE

SERBIAN SOCIETY FOR MECHANICS

SERBIAN GEOLOGICAL SOCIETY

GEOLOGICAL SURVEY OF SERBIA

MILITARY ТECHNICAL INSTITUTE BELGRADE

MATICA SRPSKA

NATIONAL LIBRARY OF SERBIA

SOCIETY OF GEOLOGICAL ENGINEERS AND TECHNICIANS OF SERBIA

After finished elementary school in his hometown Subotica, the family moved 1855 to Belgrade, accepted Orthodox faith, changed surname from Klery to Klerić, and name of the boy from Julius to Ljubomir.

In 1862, he graduated from the gymnasium in Belgrade and enrolled in the same year Faculty of Technics at the Great School in Beograd. Аfter completion of the second year of studies he went to the Mining Academy in Freibеrg as qualified state scholarship holder. During the fall term 1867/68 he moved to the Zürich Polytechnic to study mechanical engineering. Next year he completed mining studies in Freibеrg and continued studying specialist courses at the Mining Academy in Berlin, at the same time acquiring practical experience in the German mines in Westphalia, Saxony, Upper Silesia, and Pschibram (Pribram) in Bohemia.

After graduation he returned to Beograd in 1870, and got employment as a state clerk, a scribe, in the Mining Department, Ministry of Finance Principality of Serbia. During his professional carrier he attended studies in Germany and France where he patented his invention in 1872, a new drill for deep sounding with cord, and this mining machine was instantly widely implemented. Next year he came back to Serbia together with R. Hoffman dedicating himself to the geological research work in sites like Venčac, Rudnik and Kosmaj, while on Avala he discovered mercury ore. During the railroad building on the route Ćuprija – Aleksinac he was responsible for the geological explorations. He also worked in Africa and was very successful researching the iron ore deposits in Oran, Algeria.

His great curriculum includes inventions of telemeter, polar pantograph, tractograph, and device for drawing the second-line curves. In 1875 he was elected full-time professor for Mechanics and Science of Machines course at the Great School in Beograd. In 1880 this subject was divided in two courses, Theoretical Mechanics and Science of Machines when Klerić started to lecture the first of them. At the time he was fully engaged with improvement and development of the high school practice at the High School where he was a dean of the Faculty of Technics. He is a founder of Department for descriptive geometry with projective geometry and graphic-statics. He was also engaged in the government service as a minister of education and ecclesiastical affairs, minister of national economy, and also the member of State Council, and in 1905 the Commission responsible for the university instituting instead of the Great School.

In 1872 he was elected the regular member of the Serbian scientific association and in 1887 he was proposed the membership in the Department of Natural Sciences in the SRA together with J. Pančić, D. Nešić and J. Žujović. The inaugural speech titled as Compensation Theory he provided in March 1888. During 1891 he was elected secretary in the Department of Natural Sciences in the SRA. He proposed Nikola Tesla to become a corresponding member of the SRA in 1894.

His opus includes numerous articles, books and the university textbooks Theoretical Mechanics I-III. He has joined the Serbian – Turkish and Serbian – Bulgarian wars. He was decorated with the Medal for Courage and Takovo Cross, while the Belgian king Leopold II decorated him with the Leopold Medal.