Nobel Prize in Physics in 1919
= Nobel Prize in Physics in 1919
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Awarded to <Johannes Stark> for the <Doppler effect> in <canal rays> and the splitting of <spectral lines> in <electric fields>. The <Stark canal-ray experiment> follows the measurement.<The Nobel Prize in Physics 1919 by Nobel Prize Outreach>[Official award record: Stark, canal-ray Doppler effect and electric-field splitting]{ref}