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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > absorption line > Fraunhofer line > E line

E line
subject			fact

E line	has wavelength 5270 Å
	has definition Spectral line consisting of a blend of Fe I and Ca I.
	is a kind of Fraunhofer line
	has species Fe I and Ca I
Fraunhofer line	has dicovery date 1814
	has discoverer Joseph Fraunhofer
	occurs in Sun
absorption line	has antonym emission line
spectral line	has transition
	has equivalent width
spectral feature	has width
radiation measurement	has unit radiation unit
number	has value