electron spin resonance

American  

noun

Physics.

1. 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

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electron spin resonance British  

noun

1.  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

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Etymology

Origin of electron spin resonance

First recorded in 1950–55

Example Sentences

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