Credit: NOAO
This is called the Zeeman Effect. It is caused by a strong magnetic field effecting the information of the photon. I also notice that when the strong magnetic field dissipates the photon information returns to itself and continues on in a slightly changed direction. This slight change can account for Non-Gravitational Lensing of light in galactic clusters.
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I will read more about this interaction called the Zeeman Effect from WIKI and from HyperPhysics Hyperphysics is a cool site. I just found it.
Detection of the Zeeman Effect in the
36 GHz Class I CH3OH maser line with the EVLA
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