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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > ionized helium line |
ionized helium line | ||||
subject | fact |
ionized helium line | has definition Set of spectral features associate with ionized helium (He II) | |
is a kind of spectral line | ||
has species ionized helium (He II) | ||
spectral line | has transition | |
has equivalent width | ||
spectral feature | has wavelength | |
has width | ||
occurs in | ||
radiation measurement | has unit radiation unit | |
number | has value |
Kinds of ionized helium line :