Wind Turbine Becomes Colossal LED Christmas Decoration
After a year of engineering, modeling, and trials, the world's largest Christmas star now hovers above the A9 Autobahn near Munich's northern gateway. Affixed to the three blades of the massive wind turbine--70-meters tip to tip--are 9,000 light-emitting diodes (LEDs), all of which use less power than a hairdryer.
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Image credit: Siemens