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Stark effect

noun
1.
Physics. (often lowercase) the splitting into two or more components of the spectral lines of atoms in an electric field.
Origin
named after J. Stark, who described it in 1913
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for Stark effect

Stark effect

/German ʃtark/
noun
1.
the splitting of the lines of a spectrum when the source of light is subjected to a strong electrostatic field, discovered by Johannes Stark (1874–1957) in 1913
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Stark effect in Science
Stark effect
  (stärk)   
The splitting of single spectral lines of an emission or absorption spectrum of a substance into several components when the substance is placed in an electric field. The effect occurs when several electron orbitals in the same shell, which normally have the same energy level, have different energies due to their different orientations in the electric field. Quantum mechanical predictions of this effect are extremely accurate, a fact that provided compelling early evidence for quantum mechanics. The Stark effect is named after its discoverer, German physicist Johannes Stark (1874-1957). Compare Zeeman effect.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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