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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" )

Wednesday, February 09, 2005


2005 is the year of Physics.
Here you will find exciting facts and information regarding
latest advancements in research, education and use of Physics
in Technology and daily life.
We will also post interesting stories about scientists and
their discoveries.

So, check out from time to time. You may not be an expert
in Physics. But you will like it. After all, how can you avoid
knowing in simple terms how small things like electron and
big things like the universe are working around you.

Keep your comments if you donot understand something.
We'll explain each item again in simpler terms for you.

Our postings will start soon!


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