Alexander Popov inventors of radio Nikolai Basov Alexander Prokhorov laser maser Oleg Losev semiconductor junctions light-emitting diodes Vladimir Vernadsky geochemistry biogeochemistry radiogeology Élie Metchnikoff immunology Ivan Pavlov classical conditioning Lev Landau theoretical physics physics Vladimir Oleg chemistry
Alexander Popov was among the inventors of radio, while Nikolai Basov and Alexander Prokhorov were co-inventors of laser and maser. Oleg Losev made crucial contributions in the field of semiconductor junctions, and discovered light-emitting diodes. Vladimir Vernadsky is considered one of the founders of geochemistry, biogeochemistry, and radiogeology. Élie Metchnikoff is known for his groundbreaking research in immunology. Ivan Pavlov is known chiefly for his work in classical conditioning. Lev Landau made fundamental contributions to many areas of theoretical physics.
