Simplify the following text for a Grade 9 native English-speaking person.
Original: Georg von BÃ kÃ sy ( BÃ kÃ sy GyÃ rgy ) ( June 3 , 1899 -- June 13 , 1972 ) was a Hungarian biophysicist born in Budapest .
Simplified: Georg von BÃ kÃ sy ( 3 June 1899 â `` 13 June 1972 ) was an Hungarian biophysicist .