The light patterns displayed by Sky Spectrum are directly related to the current sky conditions above Ottawa’s Peace Tower. Every few minutes, the sky portion of the Hill Cam is analysed to reveal the average red, green, and blue components present in the sky. The light fixture responds according to the various relationships between these values, presenting an altered view of the sky above, revealing colour details and relationships invisible to the naked eye

More info here:
behance.net/gallery/Sky-Spectrum/1027903

j vimeo.com/21825294

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