Good evening, my name is Albano Bosquet, I'm from Argentina.
I am addressing you for the fact that I believe I have made a discovery, for several days I have been thinking about whether there is friction between particles of light, and after days I came to the conclusion that such friction could exist, following the logic of how black holes work and that the speed of light is invariably unique when a vacuum is found, I can deduce that when a ray of light is inside an atmosphere it can have friction between its particles and cause deceleration.
My question is this.

Has the friction between particles of light been measured?