Pascual Jordan Professions : Physicist Born : October 18, 1902 Died : July 31, 1980 Browse All Authors Famous Quotes by Pascual Jordan Observations not only disturb what is to be measured, they produce it. Pascual Jordan quantum-physics produce physics Similar Authors Gabriel Lippmann physicist Burton Richter physicist Bruno Rossi physicist Bruce Maccabee physicist Brian Cox physicist Allan McLeod Cormack physicist All Authors