Physics.
an electromagnetic spectrum consisting of discrete lines, usually characteristic of excited atoms or molecules. Cf. band spectrum, continuous spectrum, spectral line .
[ 1870-75 ]
Physics.
an electromagnetic spectrum consisting of discrete lines, usually characteristic of excited atoms or molecules. Cf. band spectrum, continuous spectrum, spectral line .
[ 1870-75 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012