Some Fundamental Experiments

Abstract

Some selected experiments are described in this chapter, both from the early days of quantum physics and from recent time, the interpretation of which is not possible on the basis of classical physics. The interpretation of these experiments requires novel unconventional ways of thinking because of the observed particle-wave duality. Special emphasis is laid on the photoelectric effect, the Compton effect, the diffraction of particle waves and the disappearance of interference patterns by gaining additional “Which Way” information about the particle path.