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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > absorption line > K I doublet

K I doublet
subject			fact

K I doublet	has wavelength 7699 and 7644 Å
	is a kind of absorption line
	has species potassium (K I)
absorption line	has antonym emission line
spectral line	has transition
	has equivalent width
spectral feature	has width
	occurs in
radiation measurement	has unit radiation unit
number	has value