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If town Rjukan (Rjukan) located from Oslo (Oslo), the capital of AFP] Norway, in the steep place between mountains in about 150-km Nishikata on October 21 becomes winter, sunlight will not arrive to the town of the bottom of a valley, but it will be known for being wrapped in darkness.
The trial which makes the huge mirror of three sheets installed in Yamagami reflect sunlight, and illuminates a town in the Rjukan starts.
The way of thinking which installs ? mirror in a mountain was devised about 100 years ago.
The artificial solar system realized at last will start operation formally on the 31st this month.