[General] Light from Light reflection

[Andrew Meulenberg]

Gentlemen,

In discussions after Bob Hudgins' presentation on Wednesday, I realized
that we had been too close to the problem (and solution) and did not
recognize the information gap that existed within the community. The
reference was with regards to the nature of light-light interaction. The
paper by Dowling (attached) identifies the problem between the NIW school
and the light-light interaction school.

It is necessary to emphasize and clarify some points.

   1. Dowling proposed that IDENTICAL waves interact. However,
   2. he was unable to PROVE reflection, rather than transmission.
   3. Mathematically the results are identical.
   4. In Dowling's paper, he demonstrates that even identical *components*
   of colliding waves have this property.
   5. The difference of the colliding waves always is transmitted, not
   reflected.
   6. Therefore, when added to the identical portion (that is the reflected
   part), the sum becomes equivalent to a transmitted wave.
   7. The paper showed that the differences could be in:
   1. phase
      2. amplitude
      3. polarity
      4. change in frequency

Thus, while Chandra's NIW view is almost always correct, if based on
numbers alone, there is a growing field (based on lasers), which proves
that interaction of identical light goes beyond Dirac's statement that
photons can only interact with themselves. With this new information, it is
possible to view ordinary light from a different perspective. "Any
identical portions of light beams can (and will) reflect from each other."

An example of this can be demonstrated by an introductory-physics  device
(Newton's cradle, https://en.wikipedia.org/wiki/Momentum#Conservation ).
Only if equal numbers of balls are dropped simultaneously will there be
reflection of the same number as the input. If unequal numbers are dropped
simultaneously, then it would appear that the larger number of balls is
transmitted thru the set of balls. No one would say that the balls travel
thru the stationary balls. Momentum reflection is the obvious answer in
this case - and in the case of light.

Had Dowling remembered this demonstration, he would have been able to say
with absolute authority that light can reflect from light. The appendix of
our paper is a mathematical proof of the null-momentum point in the center
of the 'dark' zone for equal waves. This is the wave equivalent of the
equal-particle demonstration.

My task for the next conference may be to demonstrate how this reflection
effect affects the photon structure within the electron.

Andrew
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