ABOVE I NOT SPEAK ABOUT AETHER

LIGHT NO NEED MEDIUM TO FLY !

C speed is max for EM preasure respect to
point where the signal Started


X1...X2...me >>> motion


short time ago I was in point X1 ,X2
now I'm in point X3
I will be in point X4

I no need AETHER to EVALUATE MOTION
I can use VACCUM and LIGHT to ask about EM preasure