A light installation for Alster-Bille-Elbe-Parks in Hamburg Hammerbrook. Its purpose is to be both a beacon for the place, visible from far away, and a source of light for the Park itself. 

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Technically it is a huge lamp, generating it's own power. A windturbine, designed to work in low to medium wind, generates voltage depending on the force of the wind. 

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So in short: More wind = More bright.