ESR homepage › Forums › what happens with EPR ? › ESR This topic has 0 replies, 1 voice, and was last updated 5 years, 5 months ago by gillesdelie. Viewing 1 post (of 1 total) Author Posts May 5, 2018 at 8:30 am #1488 Score: 0 gillesdelieParticipant When a free atom absorbs these photons certain levels will be more populated than others, thus disturbing the equilibrium and cause a shift in the magnetic moment. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In