  The transient phenomena of the Mach-Zender interferometer are discussed. To
test the non-locality hypothesis, a single mode laser with a large coherence
length is used. The behavior of a photon and its wave packets in the paths of
the interferometer are discussed. Coherent photons have wave packets that
overlap, thus their interference pattern is influenced by the overlap of the
wave packets of other photons in transient phenomena. The proposed transient
light-interference experiment will provide experimental data testing the
non-locality hypothesis.
