work, hereby publish it under the following license: English Two black light fluorescent tubes, the top one 18 inches long, the bottom one 11 inches author...
work, hereby publish it under the following license: English Two black light fluorescent lamps URL: https://commons.wikimedia.org/wiki/user:Chetvorno...
English: Two fluorescent lamps which emit ultraviolet light. (Top) A "black light" tube which emits long wave UV-A light, and very little visible light. The...
fluorescent tubes were used to illuminate the booth in an otherwise darkened room. Flicker was reduced through high frequency fixtures and even light...
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com/photos/internetarchivebookimages/14578903120/ operator: Flickr URL: https://live.staticflickr.com/2940/14578903120_597d62bd8e_o.jpg determination method: SHA-1...
than on the other. The surface has a dark grey-green and black patina, with small patches of light green corrosion around the mouth and along the blade edge...
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