如果光是最快,那什麼東西是第2快?

如果聲音係第２快．．．咁超音速戰機呢？？
ｓｏ　ｉ　ｔｈｉｎｋ聲音唔係第２快．．．
應該有其他野快過聲音．．．

I think 2nd comes the waves : e.g. the radio signals, microwaves, etc.
3rd comes electricity (speed varies with conductor)
Sound travels much slower (in air, sounds goes a lot faster in solid or liquid). A bullet shot from any gun beats the speed of sound by far.
Even commercial airplane flight, the Concorde, runs faster than speed of sound in air. (actually the Concorde went out of business not too long ago after 25 years of service)

我相信光不是最快, 無限的速度才是最快. 但什麼是無限的速度,我也不知. 而隨光之後,應是電慈波. 再跟住是電流.

ONLY FOR MYSELF IDEA.

聲音 and 電..........................