Leading up to his professorship in Bergen, he had been a fellow at CERN (1964–1967) in Geneva, Switzerland and a guest researcher at Collège de France (1973) in Paris.

Furthermore, he was instrumental in the process to develop a long-term funding model allowing Norwegian research groups to participate in the LHC experiments ATLAS and ALICE.

In addition to teaching at university level and giving presentations at international conferences, he also communicated complex physics concepts to both school children and the general public.

He advocated establishing the use of nuclear power to solve the international energy crisis, and that Norway should build a prototype of a thorium reactor.

[7] Furthermore, he was also one of the main drivers behind the UNESCO-supported traveling exhibition “Science bringing nations together”,[8] organised jointly by JINR and CERN.