Physics.
the spectrum formed by electromagnetic radiation that has passed through a medium in which radiation of certain frequencies is absorbed.
[ 1875-80 ]
Physics.
the spectrum formed by electromagnetic radiation that has passed through a medium in which radiation of certain frequencies is absorbed.
[ 1875-80 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012