Photos: Domino theories for Microsoft's Surface PC

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Earlier this year, Microsoft unveiled its Surface tabletop PC, and now Redmond is taking the technology demonstration on the road. Recently, it stopped off in London, where News.com sister site Silicon.com had a chance to take a closer look.

The Surface system, also known by the Milan code name, uses a 30-inch screen, several cameras, a PC running the Vista operating system and a projector to create an interactive, touch-sensitive environment that reacts to objects coming into contact with its flat surface.