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    { "id" : "http://dbpedia.org/resource/Stark_effect"
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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "The Stark effect is the shifting and splitting of spectral lines of atoms and molecules due to presence of an external electric field. The amount of splitting or shifting is called the Stark splitting or Stark shift.  In general, one distinguishes first- and second-order Stark effects." ] ,
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