Contamination is the presence of a minor and unwanted constituent (contaminant) in a material, in a physical body, in the natural environment, at a workplace, etc.

Read more about Contamination:  Specifics

Other articles related to "contamination":

Spin Contamination - Contamination
... last two terms is a measure of the extent of spin contamination in the unrestricted Hartree–Fock approach and is always non-negative – the wave function is usually contaminated to ... Naturally, there is no contamination if all electrons are the same spin ... Also, there is often no contamination if the number of α and β electrons is the same ...
Contamination - Specifics
... Contamination" also has more specific meanings in science and in geology In chemistry, the term usually describes a single constituent, but in specialized fields the term ... All chemicals contain some level of contamination ... Contamination may be recognized or not and may become an issue if the contaminated chemical is mixed with other chemicals or mixtures and causes additional chemical reactions ...