Crystals with a periodically varying dielectric constant can be engineered to have a band gap restricting the propagation of these particles.
Crystals with a periodically varying dielectric constant can be engineered to have a band gap restricting the propagation of these particles. The self-force caused by a particle emitting one of these particles is given by the Abraham-Lorentz formula. Neutral pions primarily decay into two of these particles. In quantum electrodynamics, interactions mediated by the electromagnetic force are accompanied with the exchange of a virtual one of these particles, since these particles are the (*) gauge boson of the electromagnetic force. These particles lose energy during Compton scattering. The energy of one of these particles equals Planck's constant times its frequency. For 10 points, name these massless particles which are the quanta of light.
Crystals with a periodically varying dielectric constant can be engineered to have a band gap restricting the propagation of these particles.
photons [accept "photonic crystals," "virtual photons," etc.]