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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > H gamma
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H gamma comparison table
Subject has lower energy level has specie has upper energy level has definition has series limit is a kind of has wavelength is an instance of
Balmer line2hydrogen (H I) The series lies in the visible portion of the spectrum. (Deuterium Hα is 1.785 Å short-ward of hydrogen Hα)3647 Åhydrogen line  
spectral line   A line corresponding to an image of the entrance slit of the spectrometer, seen when light is either emitted by or interrupted by a hot rarefied gas such as hydrogen. The pattern is characteristic of the gas and the wavelength at which the features are observed to occur is indicative of the velocity of the object. spectral feature  
H gamma2 5 3647 Å 4342 ÅBalmer line

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