Photons get polarized by magnetic fields. This has been known since Faraday made this discovery back in 1845. However, no similar effect occurs when photons
It was not until about 4500 years ago that humans first gave a name to the color blue. The first ones to do so were the Egyptians who knew how to produce blue dye.
When light hits a highly reflecting surface, like a mirror, no energy is lost. The bounce of the photons off the atoms that make up the mirror is perfectly elastic.