Before revision: One classical example is FTIR (Frustrated Total Internal Reflection ) in which the evanescent field very close (see graph) to the surface of a dense medium at which a wave normally undergoes total internal reflection overlaps another dense medium in the vicinity.
After revision: One classical example is frustrated total internal reflection (FTIR ) in which the evanescent field very close (see graph) to the surface of a dense medium at which a wave normally undergoes total internal reflection overlaps another dense medium in the vicinity.