Tue February 12, 2013 By: Arshpunia

What is stark and Zeeman effect?

Expert Reply
Tue February 12, 2013
The Stark effect is the shifting and splitting of spectral lines of atoms and molecules due to presence of an external static electric field. 

The atomic energy levels, the transitions between these levels, and the associated spectral lines discussed to this point have implicitly assumed that there are no magnetic fields influencing the atom. If there are magnetic fields present, the atomic energy levels are split into a larger number of levels and the spectral lines are also split. This splitting is called the Zeeman Effect.

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