In this video we defined a particle which named sub-photon that is one thousandth, one millionth, or one billionth of a photon in terms of radius. According to the calculations and definitions, it can be proved that there is a particle whose radius is one billionth of a photon's radius and its volume is 10 to the power of minus 27 meter of the photon's volume.
In this video we introduce a particle that is a subset of the photon, and its radius would be about 10^-9 times the radius of the photon that this particle has been the creator and constituent of the Big Bang.