Can Quantum-Mechanical Description of Physical Reality be Considered Complete? (2)

N. Bohr

Institute for Theoretical Physics, University, Copenhagen

Received 13 July 1935
It is shown that a certain “criterion of physical reality” formulated in a recent article with the above title by A. Einstein, B. Podolsky and N. Rosen contains an essential ambiguity when it is applied to quantum phenomena. In this connection a viewpoint termed “complementarity” [...]

Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?

A. Einstein, B. Podolsky, and N. Rosen

Institute for Advanced Study, Princeton, New Jersey

Received 25 March 1935
In a complete theory there is an element corresponding to each element of reality. A sufficient condition for the reality of a physical quantity is the possibility of predicting it with certainty, without disturbing the system. In quantum mechanics [...]