1 For severe stains, add 1-2 cups vinegar to the wash cycle as well. 2  To remove a rust stain from your cotton work clothes, moisten the spot with some full-strength vinegar and then rub in a bit of salt. 3  If itâs warm outdoors, let it dry in the sunlight (otherwise a sunny window will do), then toss it in the wash.
absorption spectrum - the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths. spectrum - an ordered array of the components of an emission or wave.
Absorption Spectrum. 1) The emission spectrum is obtained due to emission of radiation from the substances. The absorption spectrum is obtained when the substance absorbs the radiation. 2) White lines are formed on the black background.Black lines are formed on the white background.) The emission spectrum is obtained due to emission of radiation from the substances. The absorption spectrum is obtained when the substance absorbs the radiation. 2) White lines are formed on the black background.