Eco-friendly LED Lighthouse Test in Yokohama
Eco-friendly LED Lighthouse Test in Yokohama
26 November 2009
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Engineers test eco-friendly light emitting diodes (LED) in a 113-year-old lighthouse in Yokohama Port, south of Tokyo, on Nov. 19, 2009. The Japan Coast Guard switched the lighthouse to LED with a solar power generating device from incandescent lighting.
Source and Photo: Kyodo


















































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