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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > U line |
U line | ||||
subject | fact |
U line | has wavelength 3302 Å | |
is a kind of spectral line | ||
has species sodium (Na I) | ||
spectral line | has transition | |
has equivalent width | ||
spectral feature | has width | |
occurs in | ||
radiation measurement | has unit radiation unit | |
number | has value |