The NAAP Hydrogen Energy Levels Module introduces the concept of how quantum mechanics and light relate with respect to the Hydrogen atom. The Energy Levels simulator allows dynamic interaction with a Bohr model version of a single Hydrogen atom. The Thermal Distribution histogram gives a temperature dependent plot of occupied states for many, many atoms.
First time users of NAAP materials should read the NAAP Modules – General Overview page.
Hydrogen Energy Levels (pdf)