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

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