The Cherenkov effect A charged particle traveling in a dielectric medium with n>1 radiates Cherenkov radiation if its velocity is larger than the phase velocity of light v>c/n or Î² > 1/n (threshold) The emission is due to an asymmetric polarization of the medium in front and at the rear of the particle, giving rise to a varying electric dipole momentum.
cyclo-. 1. Combining forms relating to a circle or cycle; or denoting an association with the ciliary body. 2. In chemistry, a combining form indicating a continuous molecule, without end, or the formation of such a structure between two parts of a molecule.
cyÂ·clic. 1. Pertaining to, or characteristic of, a cycle; occurring periodically, denoting the course of the symptoms in certain diseases or disorders. 2. chemistry Pertaining to a molecule containing a ring of atoms; denoting a cyclic compound. , cyclical (sÄ«â²klik, sikâ²lik; sÄ«â²kli-kÄl, sikâ²li-kÄl) [L. cyclicus fr.