## Time Evolution Exercise #0

#### Please answer the following 4 questions
regarding the Physlet:

#### Description

A wave function for a plane wave is shown in two different
representations. Shown in the upper graph is the amplitude and phase
(as color) representation while in the bottom graph the real (red) and imaginary
(green) components of the wave function are shown separately.

#### Questions

- In the upper graph, what color corresponds to a positive and purely real
value of the wave function?
- In the upper graph, what color corresponds to a negative and purely real
value of the wave function?
- In the upper graph, what color corresponds to a positive and purely
imaginary value of the wave function?
- In the upper graph, what color corresponds to a negative and purely
imaginary value of the wave function?

#### Credits

Script by Mario Belloni and Wolfgang Christian.

Questions by Mario Belloni.

Java applets by Wolfgang Christian.