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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > absorption edge > Helium discontinuity
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Helium discontinuity
subjectfact 
Helium discontinuityis a kind of absorption edge2001-09-27 09:33:20.0
has species helium (He I)2001-09-27 09:33:20.0
spectral featurehas wavelength2001-09-27 09:33:18.0
has width2001-09-27 09:33:18.0
occurs in2001-09-27 09:33:18.0
radiation measurementhas unit radiation unit2001-09-27 09:33:16.0
numberhas value2001-09-27 09:32:57.0