Originally Posted by enorbet2
Considering Einstein's axiom that the speed of light is constant, and that until very recently it was thought that photons have any mass at all only because of their constant and extreme speed, it is still an interesting subject and worthy of a thread, even though at least 60% here don't even know what an "axiom" is and are too lazy to look it up.
Ignorance is fixable. Stupidity goes right down to deoxyribonucleic acid.
It's interesting though--because the speed of light IS
constant--the caveat is that it's constant for a given medium with given physical properties. Change the medium or the properties, and of course the speed of light will change accordingly, and it's threshed out in the theory quite accurately. So clarify what you are trying to imply here. It's nothing new that the speed of light has been slowed down, and no one said that the speed of light must always be ~3e^8 m/s under all conditions. BEC's--nearly the same one that the quoted research used--were postulated in the early 20th century, and then observed in the lab in the mid-90's.