O

Odhner, Willgodt Theophil, 79
Office of Naval Research (ONR), 198, 204
Office of Scientific Research and Development (OSRD), 139
Ohl, Russell, 226
Olsen, Kenneth, 202, 25658
Oppenheimer, J. Robert, 136
Oscillator, phase-shift, 233, 23637
Oughtred, William, inventions of, 1112
Output unit, 65