Wooden pole of a minor overhead power line, unidentified location. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286721/free-photo-image-electricity-public-domain-poleFree Image from public domain licenseElectricity pylons at sunrise OR sunset, unidentified location. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286547/free-photo-image-electric-energy-electricity-power-gridFree Image from public domain licenseHand holding a light bulb https://www.rawpixel.com/image/1213900/creative-and-innovative-ideasView licenseAt Los Alamos National Laboratory, UV light shines through a sample of transparent material containing quantum dots, tiny… https://www.rawpixel.com/image/3322322/free-photo-image-laser-power-basicFree Image from public domain licenseIndustrial scene on Nueces Bay in Corpus Christi, Texas. Original image from Carol M. 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