Physics.
a sudden change in the refractive index of a material for wavelengths in the vicinity of absorption bands in the spectrum of the material.
[ 1880-85 ]
Physics.
a sudden change in the refractive index of a material for wavelengths in the vicinity of absorption bands in the spectrum of the material.
[ 1880-85 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012