MY original tumblr post was here. This photograph was originally posted on tumblr by Drop Box of Curiosities with the explanatory text “Van de Graff Generator at the American Museum of Atomic Energy, Oak Ridge, Tennessee, 1970s.” It comes to us via madddscience.
Reminds me of https://www.youtube.com/watch?v=PJh4RTy-Lkg
the scene is set in the ballroom of a Zeppelin!