ABSTRACT
We have seen that a quantum particle like an electron has wave-like features and that an electromagnetic wave has particle-like properties as we may consider such a wave as a collective of photons. This naturally raises the question how quantum particles really exhibit these wave-like properties. In this chapter we focus on the question of whether particles can show interference effects like waves do. The answer to this question is affirmative, as is demonstrated by the famous double slit experiments of various kinds. In this chapter we consider classical as well as quantum wave phenomena.
