Assertion: photon | /r/HasProperty | emitted
Facets:
Source sentences:
text: During a molecular, atomic or nuclear transition to a lower energy level, photons of various energy will be emitted, ranging from radio waves to gamma rays.
text: Photons can also be emitted when a particle and its corresponding antiparticle are annihilated (for example, electron–positron annihilation).:572,1114,1172
text: (However, it is possible if the system interacts with another particle or field for the annihilation to produce one photon, as when a positron annihilates with a bound atomic electron, it is possible for only one photon to be emitted, as the nuclear Coulomb field breaks translational symmetry.):64–65
text: A photon is emitted when an atom dumps some of its energy.