Skip to main content

# Illustration Energy levels - infinite square potential well (1d)

Get illustration

Share — copy and redistribute the material in any medium or format

Adapt — remix, transform, and build upon the material for any purpose, even commercially.

Sharing and adapting of the illustration is allowed with indication of the link to the illustration.

A one-dimensional potential well $$W_{\text{pot}}(x)$$ of a certain length with infinitely high potential walls. This means: A particle inside the potential well would need infinite energy to get out of the well.

According to quantum mechanics, the particle (for example an electron) inside the well can only occupy discrete energies $$W_1$$, $$W_2$$, ... $$W_n$$. The six lowest energy levels were drawn in. It is also indicated in the sketch that the energies increase quadratically.