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electron spin resonance

American

noun

Physics.

the flipping back and forth between two spin directions of electrons in a magnetic field when electromagnetic radiation of the proper frequency is applied. ESR

electron spin resonance British

noun

ESR. a technique for investigating paramagnetic substances by subjecting them to high-frequency radiation in a strong magnetic field. Changes in the spin of unpaired electrons cause radiation to be absorbed at certain frequencies See also nuclear magnetic resonance

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of electron spin resonance

First recorded in 1950–55

Example Sentences

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They also applied another technique known as electron spin resonance dating to directly date one of the skeleton’s molars; the results matched the sediment’s radiocarbon dates.

From Science Magazine

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023