Charles Hixson said:
> Columbia University is trying to build a time machine, of sorts.
> Probably it will have the restriction that it will only transport
> photons, and not to anytime before the machine was created, or
> after it was turned off. But photons are enough to allow
> messaging. (These details are added by me, in my ignorance. Don't
> attribute them to the project.)
>
> Sorry, I don't remember what the project is called. It has to do
> with counter-rotating beams of photons that have been slowed to
> less than 30 mph, using bose-concentrates.
That sounds like this:
http://www.kurzweilai.net/news/news_single.html?id=167
Time twister
New Scientist, May 19, 2001
A practical way to make a time machine using two counter-circulating beams
of light is the goal of experiments by Ronald Mallett, professor of
theoretical physics at Connecticut University.
An ultra-cold bath of atoms known as a Bose-Einstein condensate is required
to slow down the speed of light to make it work, limiting the hypothetical
phenomenon to a lab curiosity for now.
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