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Scientists
Physicists, biologists, chemists, and researchers
Ibn al-Haytham
Idris
Igor Tamm
Ilya Frank
Ilya Prigogine
Immanuel Kant
Imre Lakatos
Irène Joliot-Curie
Irving Langmuir
Irwin Rose
Isaac Barrow
Isaac Newton
Isabella Abbott
Isidor Isaac Rabi
Israel Gelfand
Ivan Pavlov
Ivan Sutherland
J. C. R. Licklider
J. Presper Eckert