Custom built "solar cube" for the Discovery Science Center in Santa Ana, CA.
Photo by Stephen Coffrin. – <a rel="nofollow" class="external text" href="https://www.flickr.com/people/37916456@N02">U.S. Department of Energy</a> from United States
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/departmentofenergy/36776418246/">Coffrin_000327_172942_518380_4578</a>