"0"^^ . . . "a dark band in the spectrum of white light that has been transmitted through a substance that exhibits absorption at selective wavelengths"@en-us . . . . "absorption band"@en-us . . "absorption band"^^ . "11420631-n"^^ . . "0"^^ . "107772046"@en-us . . "111420631"^^ . "110682220"@en-us . .