Overhauser effect
/ˈəʊvəˌhaʊzə(r) ɪˌfɛkt/Chemistry
noun
More fully nuclear Overhauser effect. An effect whereby changing the populations of spin states of a nucleus by selective radio-frequency irradiation results in an enhanced magnetic resonance of nearby nuclei.
Origin
1950s; earliest use found in Science. From the name of Albert Warner Overhauser, U.S. physicist, who published an account of the phenomenon in 1953 (Physical Rev. 89 689) + effect.
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