noun
Etymology: so called from its having been first observed in a synchrotron
: electromagnetic radiation emitted by high-energy charged relativistic particles (as electrons) when they are accelerated by a magnetic field (as in a nebula)
noun
Etymology: so called from its having been first observed in a synchrotron
: electromagnetic radiation emitted by high-energy charged relativistic particles (as electrons) when they are accelerated by a magnetic field (as in a nebula)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012