How Window Washers Almost Sunk Salesforce Tower’s Interactive Light Sculpture

Electrical engineer and artist Jim Campbell explains the technology behind the highest public art installation in the world, and the challenge of avoiding window washers

On the top of San Francisco’s 1,070-foot Salesforce Tower, the new skyscraper dominating the cityscape, the show starts at twilight. The top 130 feet of the tower lights up in yellow, and then dancers move across it. On a clear night, the show is visible for 30 miles. It’…
IEEE Spectrum Green Tech

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