BOHRS COMPLEMENTARITY PRINCIPLE - ITS RELATION TO QUANTUM-MECHANICS

N. Bohr asserted that quantum mechanical formalism offers an adequate tool for a complementary way of describing nature. Unfortunately he di d not precisely formulate the principle of complementarity and demonst rate its relation to quantum mechanics. This led to many controversies and misunderstanding particularly with respect to the complementarity between particle and wave properties. In this paper a precise formula tion of the principle is intended in the spirit of Bohr, and its relat ion to quantum mechanical formalism is clarified. Some recent experime nts (both suggested and actually performed) are discussed in the light of the present formulation and it is concluded that no experiment has succeeded to disprove Bohr's Complementarity Principle.