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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > set of lines > lambda doublet

lambda doublet
subject			fact

lambda doublet	has definition Two lines in the microwave region of the spectrum of the OH molecule caused by splitting of electronic levels.
	is a kind of set of lines
	has species OH
spectral feature	has wavelength
	has width
	occurs in
radiation measurement	has unit radiation unit
number	has value