Obruchev, Vladimir Afanasievich
Obruchev, Vladimir Afanasievich
Ocagne, Philbert Maurice d'
Ocagne, Philbert Maurice d'
Ochsenius, Carl
Ockham, William of
Ockham, William of
Oddi, Ruggero
Odierna, Gioanbatista
Odierna, Gioanbatista
Odling, William
Oenopides of Chios
Oenopides of Chios
Oersted, Hans Christian
Ohm, Georg Simon
Oken, Lorenz
Oken, Lorenz
Oken, Lorenz
Olaus Magnus
Olaus Magnus
Olaus Magnus
Olbers, Heinrich Wilhelm Matthias
Olbers, Heinrich Wilhelm Matthias
Oldenburg, Henry
Oldham, Richard Dixon
Oldham, Thomas
Oliver, George
Olszewski, Karol Stanisław
Olszewski, Karol Stanisław
Olufsen, Christian Friis Rottbøll
Olympiodorus
Olympiodorus
Omalius d'Halloy, Jean Baptiste Julien d'
Omori, Fusakichi
Onsager, Lars
Onsager, Lars
Oparin, Aleksandr Ivanovich
Oparin, Aleksandr Ivanovich
Oppel, Albert
Oppel, Albert
Oppenheim, Samuel
Oppenheimer, J. Robert
Oppolzer, Theodor Ritter von
Oppolzer, Theodor Ritter von
Orbeli, Leon Abgarovich
Orbigny, Alcide Charles Victor Dessalines d'
Orcel, Jean
Oresme, Nicole
Oresme, Nicole
Oribasius
Orlov, Aleksandr Yakovlevich
Orlov, Aleksandr Yakovlevich
Orlov, Aleksandr Yakovlevich
Orlov, Sergey Vladimirovich
Orlov, Sergey Vladimirovich
Orlov, Yuri Aleksandrovich
Ornstein, Leonard Salomon
Orta, Garcia d'
Orta, Garcia d'
Orta, Garcia d'
Orta, Garcia d'
Ortega, Juan de
Ortelius, Abraham
Orton, James
Orton, James
Osborn, Henry Fairfield
Osborne, Thomas Burr
Osgood, William Fogg
Osiander, Andreas
Osiander, Andreas
Osmond, Floris
Osterhout, Winthrop John Vanleuven
Osterhout, Winthrop John Vanleuven
Ostrogradsky, Mikhail Vasilievich
Ostrogradsky, Mikhail Vasilievich
Ostwald, Carl Wilhelm Wolfgang
Ostwald, Carl Wilhelm Wolfgang
Ostwald, Friedrich Wilhelm
Ostwald, Friedrich Wilhelm
Ott, Isaac
Oudemans, Corneille Antoine Jean Abram
Oudemans, Corneille Antoine Jean Abram
Oughtred, William
Outhier, Réginald
Outhier, Réginald
Overton, Charles Ernest
Overton, Charles Ernest
Overton, Charles Ernest
Owen, David Dale
Owen, George
Owen, Richard
Owen, Richard
Owen, Richard
Ozanam, Jacques
Ozersky, Aleksandr Dmitrievich