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Quote:
Litracon© is a concrete stone-block that turns out to be light conducting through its embedded glassfibers. From one side to the other light passes the stone with- out any significant loss and illumi- nates the darker side of the stone. Shadows are transmitted and shown in precise shapes on the opposite surface.
Mass produced LiTraCon© products are expected to be on the market at the end of 2004. *
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LiTraCon©
(I think they used up all their creativity on inventing the concrete, before they got around to naming it)