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.
Infrared Spectroscopy 2. Infrared (IR) Spectroscopy 2.1. Introduction Infrared spectroscopy is an absorption method in the wavelength region of 1 to 100 Âµm inthat extends the region of the visible light to longer wavelengths and smallerfrequencies/energies.