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.
clo. A unit for thermal insulation of clothing. It is the amount of insulation necessary to maintain comfort in a sitting-resting subject in a normally ventilated room (air movement at the rate of 10 cm/sec) at a temperature of 70Â°F (21Â°C) with relative humidity of less than 50%.