Waves & Interference

(Based on Wikipedia)

Here is a quick look for a wave and its basic properties:

       

 

Double slit experiments

Here is "Two-slit diffraction pattern with an incident plane wave".

       

Each slit becomes a wave source. Then, two waves add up, a phenomenon known as superposition.

The waves interfere constructively (adding up) or destructively (canceling each other out).

Here is another demonstration:

       

 

Light and atomic particles exhibit wave-like behavior.

Here is a double slit experiment for electrons:

       

 

Amplitude & Superposition

We use both the terms "Amplitude" and "Superposition" in the quantum context, but with different meanings.