Stjepan Mohorovičić
Croatian scientist (1890-1980)

Stjepan Mohorovičić (August 20, 1890 – February 13, 1980) was a Croatian physicist, geophysicist and meteorologist, known as the "father of positronium", whose existence he predicted in 1934.
Biography
Mohorovičić was born in the town of Bakar. His father was the world-famous geophysicist Andrija Mohorovičić. He studied mathematics and physics at the University of Zagreb where among others his professors were Vinko Dvořák and Andrija Mohorovičić, and later he studied at Göttingen where some of his professors were Arnold Sommerfeld, Woldemar Voigt and David Hilbert. Later on he received a doctorate degree from the University of Zagreb. Mohorovičić was an opponent of Einstein's theory of relativity. Because of his longtime opposition and criticisms of theory of relativity he remained a high school professor his whole life. His work went largely ignored, especially in Croatia. He died in Zagreb.
Scientific work
His scientific interests included seismology, meteorology, astrophysics and theoretical physics.
The public source identifies “Stjepan Mohorovičić” as croatian scientist (1890-1980). This brief keeps that definition visible, then builds a research path around Stjepan, Mohorovičić and Croatian.
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Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Sep 1, 2026. The linked authority identifier is Q3077932. VIAF identifies the subject as 310508966. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1890, 1980 and 1934.
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This entry incorporates text from “Stjepan Mohorovičić” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.