Memory is fundamental to nature. Everything we see around us is an image of the past. Everything that happens in the present is the result of something
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.