UOG - "Scientists at the University of Glasgow have, for the first time, been able to drag light by slowing it down to the speed of sound and sending it through a rotating crystal."
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"Most people may think the speed of light is constant, but this is only the case in a vacuum, such as space, where it travels at 671million mph"
So what is the speed of sound in a vacuum, lol.
what about speeding it up :)
DP sorry
Anyone else gets the feeling the world is going to end due to experiments scientist do ?
Isn't this old news?
Professor Lene V. Hau at Harvard slowed light to a complete stop using a Bose-Einstein condensate years ago: http://www.seas.harvard.edu...
But maybe the news is related to the "rotating crystal"?