330-PS-2598  (111-SC-43980AC):   One of the key electronics devices used by the scientific observers was the photo-electric cell which recorded the fading light values of the sun.  Mr. John R. Wren, Jr., inspects the housing unit of the cell prior to setting it up for the operation on the day of the eclipse.     Photograph released April 3, 1952.  (5/19/2015).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
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