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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > absorption line > Fraunhofer line > D line > D2 line
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D2 line
subjectfact 
D2 linehas wavelength 5890 Å2001-09-27 09:33:23.0
has definition Spectral line of neutral sodium.has source: Talbot, J. 2001, 2001-09-27 09:33:23.0
is a kind of D line2001-09-27 09:33:23.0
D linehas species Na I2001-09-27 09:33:23.0
interstellar linehas width narrow2001-09-27 09:33:23.0
has detection procedure narrow absorption lines which don't participate in the periodic Doppler shift of intrinsic absorption lines in a binary star2001-09-27 09:33:23.0
has equivalent width depends on the amount of absorbing matter between the source and the observer2001-09-27 09:33:23.0
occurs in O stars2001-09-27 09:33:23.0
Fraunhofer linehas dicovery date 18142001-09-27 09:33:23.0
has discoverer Joseph Fraunhofer2001-09-27 09:33:23.0
occurs in Sun2001-09-27 09:33:23.0
absorption linehas antonym emission line2001-09-27 09:33:23.0
spectral linehas transition2001-09-27 09:33:20.0
radiation measurementhas unit radiation unit2001-09-27 09:33:16.0
numberhas value2001-09-27 09:32:57.0