Ivan Puluj
Ivan Pavlovych Puluj (Ukrainian: Іван Павлович Пулюй, pronounced [iˈwɑn pʊˈlʲuj]; German: Johann Puluj; 2 February 1845 – 31 January 1918) was a Ukrainian physicist and inventor known for his early research into X-rays. His contributions were largely neglected until the end of the 20th century.