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.
1 There are 12 carbons in this molecule, thus the prefix dodec- is used. 2  The molecule is cyclic, so cyclo is used in the name. 3  There are three rings in the molecule, so the prefix tri- is used.  An explanation of how to count the number of rings is necessary.