Definitions for "Electron spin resonance"
a chronometric dating technique based upon the behavior of electrons in crystals exposed to naturally occurring radioactivity; used to date limestone, coral, shell, teeth, and other materials. Enables trapped electrons within bone and shell to be measured without the heating that thermoluminescence requires.
the response of electrons to electromagnetic radiation and magnetic fields at discrete frequencies. EPI - echo planar imaging. See also Echo Planar Imaging.
microwave spectroscopy in which there is resonant absorption of radiation by a paramagnet