Prototype of a linear parabolic reflector used to gather the sun's energy and heat fluid in the center pipe to several hundred degrees , 04/1974

Size: 1713px × 1167px
Photo credit: © PF-(usna) / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., agency, archives, boyd, boydnorton, documerica, environmental, environmentalprotectionagency, historic, history, nara:arcid=555347, national, norton, protection, usa, usnationalarchives