Ferdinand Graft Brickwedde (1903-1989), a physicist at the National Bureau of Standards (now the National Institute of Standards and Technology), in 1931 produced the first sample of hydrogen in which the spectrum of its heavy isotope, deuterium, could be observed.
Ferdinand Marcos | Ferdinand Magellan | Franz Ferdinand | Ferdinand II of Aragon | Franz Ferdinand (band) | Archduke Franz Ferdinand of Austria | Ferdinand von Mueller | Ferdinand I, Holy Roman Emperor | Ferdinand I | Ferdinand | Louis-Ferdinand Céline | Ferdinand Foch | Rio Ferdinand | Ferdinand VII of Spain | Ferdinand de Lesseps | Ferdinand Porsche | Ferdinand II, Holy Roman Emperor | Ferdinand II | Ferdinand Hodler | Ferdinand I of Naples | Ferdinand III | Ferdinand Vandeveer Hayden | Ferdinand I of the Two Sicilies | Ferdinand I of Bulgaria | Ferdinand I of Aragon | Ferdinand III of Castile | Ferdinand III, Holy Roman Emperor | Ferdinand Finne | Ferdinand Bonaventura, 7th Prince Kinsky of Wchinitz and Tettau | Ferdinand von Zeppelin |