AI • Technology • Innovation on Instagram: "What looks like a glowing strand is actually light trapped on purpose. Fiber optic cables work by guiding light through ultra pure glass using a phenomenon called total internal reflection, where light bounces endlessly inside the cable instead of escaping. A tiny glass core carries the light, while a surrounding cladding layer reflects it back in whenever it hits the boundary at the right angle. Even when the cable bends, the signal stays contained. D

Films | Movies | Tv series on Instagram: "The post features a 60-second video of a black-and-white Border Collie expertly herding a flock of sheep across lush, hilly pastures towards a farm gate, showcasing seamless coordination without human intervention. Shared by @naseebullah088 , an account focused on nature and wildlife, it replies to a highly viral sheep-herding video from @Queen_primis , which has amassed over 6 million views and 9,700 likes since 20 December 2025. Border Collies' precisi