GRONINGEN, NETHERLANDS - AUGUST 22, 2015: Smart flower foldable solar collector on the groningen university area. The smart flow

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GRONINGEN, NETHERLANDS - AUGUST 22, 2015: Smart flower foldable solar collector on the groningen university area. The smart flower provides all the energy for the exterior lighting of the campus sports center

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Size: 3977px × 2798px
Photo credit: © hans engbers / Alamy / Afripics
License: Licensed
Model Released: No

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