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2Physics Quote:
"Can photons in vacuum interact? The answer is not, since the vacuum is a linear medium where electromagnetic excitations and waves simply sum up, crossing themselves with no interaction. There exist a plenty of nonlinear media where the propagation features depend on the concentration of the waves or particles themselves. For example travelling photons in a nonlinear optical medium modify their structures during the propagation, attracting or repelling each other depending on the focusing or defocusing properties of the medium, and giving rise to self-sustained preserving profiles such as space and time solitons or rapidly rising fronts such as shock waves." -- Lorenzo Dominici, Mikhail Petrov, Michal Matuszewski, Dario Ballarini, Milena De Giorgi, David Colas, Emiliano Cancellieri, Blanca Silva Fernández, Alberto Bramati, Giuseppe Gigli, Alexei Kavokin, Fabrice Laussy, Daniele Sanvitto. (Read Full Article: "The Real-Space Collapse of a Two Dimensional Polariton Gas" )

Saturday, September 03, 2005

Nuclear Fusion

Today we have 3 short postings on recent happenings in Fusion research.
Nuclear fusion is the power that drives our sun and thus our life.
Supporters of nuclear fusion argue that it has the potential to be a safe and
sustainable source of energy that does not produce any greenhouse-gas
emissions or long-lived nuclear waste. A fusion reactor would need just
100 grams of deuterium and 3 tons of natural lithium to produce a power
output of 1 GigaWatt, which is equivalent to a large power station
[lithium is needed to generate tritium].
So, follow our 3 postings below:


3 Comments:

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Mary Hodder on the Flickr - Yahoo ID flap
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At 8:01 AM, Blogger oceanskies79 said...

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