The Rjukan Norwegian town suffers always a big problem: it is situated in a valley surrounded by mountains for almost five months a year the sun does not reach it, forcing the inhabitants in an unbroken shade.
To resolve (at least partially) the problem, an "artificial Sun" was produced: it is a system of motorized mirrors, seats on top of one of the mountains that surround the town and which will reflect the sun's rays toward it. Since September is starting the testing of the system.
The idea of the mirror system was born several decades ago, but at that time it was not technically feasible, so that was proposed as an alternative to the construction of a cable car to allow the occupants to quickly reach areas out of the shadows and spend a few time of day in the sun.
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