## time reversalThe mathematical operation analogous to running a movie film backward, i.e. replacing time t with time -t. In other words, a transformation
from agiven physical system undergoing a given sequence of events to a system
in which the exact reverse sequence of states is undergone. The symmetry
of time reversal (symbol T) is known as T invariance. As with CP
violation, T violation occurs in certain weak
interactions, notably kaon decay. See
also CPT theorem. ## Related category• PARTICLE PHYSICS | |||||

Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact |