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 spectroscopy. An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light as a specific example. A white beam source â emitting light of multiple wavelengths â is focused on a sample (the complementary color pairs are indicated by the yellow dotted lines).