User blog comment:Ricizubi/The main villains from the Grand Line/@comment-3202520-20120122143947/@comment-3425840-20120123130646

Akali95, did you read my comment? If you did then you should have noticed that I wrote that "SPEED OF ELECTROMAGNETIC WAVES (WHICH LIGHT IS A PART OF) IN VACUUM IS THE FASTEST" that is what it is according to physics. However, IF LIGHT TRAVELS THROUGH OTHER MEDIUM IT COULD GET SLOWER DEPENDING ON THE DENSITY OF THE MEDIUM AND SOME OTHER ISSUES. IF THAT HAPPENS THEN IT IS NO LONGER THE FASTEST AND THUS COULD BE SURPASSED BY LIGHTNING. Although it is not what happens in regular basis, theoretically its possible. Got my point? Light is indeed the fastest if the medium is vacuum (also air as air does not slow it down by much).