>>49940525>>49940494>>49940506you can't be serious murilards...
standard or etalon is the a speed of light in vacuum which is 300000km/s
you always compare to it not vise-versa
the difference between speed of light in fiber and speed of light is 1/3 of speed of light
he made fundamentally huge mistake comparing that way and also neglecting atmosphere
bye fam gotta kill self