I have looked through the search to see if there was a satisfactory answer, but had no luck, so let quickly mention that I have always stood in awe at the collective knowledge that springs from this forum. It cannot be unlike tuning in to Douglas Adam's "Deep Thought".
Having hopefully stroked the collective ego, I will now ask my question:
Supposedly, once emitted, a photon is unaffected by electromagnetic influences and will not veer from its path*. My question is, if polarized laser light passes close to an electric discharge on its way to a given target, will the disturbance in any way influence the path or quality of the photon?
*Here, I am omitting the 'bending' of light, as in streaming electrons in a fluctuating magnetic field emitting photons (as in a TV tube) and also turning a blind eye to gravitational considerations (which are minute unless we are talking solar masses, black holes etc.)
The answer is of some import to me, as I would like to inaugurate a conversation with an interferometry expert in the not-too-far-future, and do not want to come off as a complete boob. Consequently any help you can give me on this question would be greatly appreciated.