Seriously, consciousness itself has Light as a natural attribute.
I’ve observed that the higher the frequency of consciousness in meditation, the brighter the Light.
When consciousness shifts to a lower level it yields Light in a similar manner to electrons moving from a higher orbital to a lower gives off photons. Neals Bohr discovered this attribute.
The key to reaching the real high levels is to spin your masculine consciousness one direction and feminine the other direction. These two aspects of consciousness must be stabilized and held together with Love.
This is the end result of the mystics of all religions.