Complex sentence: Fiodar Fiodaraŭ, (Фёдар Фёдараў, Фёдор Иванович Фёдоров, Fedor Ivanovich Fedorov), (June 19,1911-October 13,1994) was a famous Belarusian physicist, whose scientific interests ranged from optics and spectroscopy to the theory of elementary particles.
Split into simpler sentences: Fiodar Fiodaraŭ, (Фёдар Фёдараў, Фёдор Иванович Фёдоров, Fedor Ivanovich Fedorov), (June 19,1911-October 13,1994) was a famous Belarusian physicist. His scientific interests ranged from optics and spectroscopy to the theory of elementary particles.