. "11475476-n"^^ . "a spectrum in which energy is concentrated at particular wavelengths; produced by excited atoms and ions as they fall back to a lower energy level"@en-us . "line spectrum"^^ . . . "110735104"@en-us . "0"^^ . . "111475476"^^ . . . . "line spectrum"@en-us . . . "0"^^ .