Complex sentence: The Sokolov-Ternov effect is the effect of selfpolarization of relativistic electrons or positrons circulating at high energy in a magnetic field through the emission of spin-flip synchrotron radiation.
Split into simpler sentences: The Sokolov-Ternov effect is the effect of selfpolarization of relativistic electrons or positrons moving at high energy in a magnetic field. The self-polarization occurs through the emission of spin-flip synchrotron radiation.