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LEEverything you see online is just a series of lightning-fast light pulses traveling through hair-thin glass. 🌐
The secret to fiber optics is a physics phenomenon called Total Internal Reflection (TIR). Inside the cable, a glass core is surrounded by a "cladding" material with a lower refractive index. When light hits the boundary between them at a shallow angle, it doesn't pass through; instead, it bounces back into the core with 100% efficiency. This allows data to travel thousands of miles even around corners without losing its signal.
To turn this light into information, engineers use binary code. A pulse of light represents a 1, and the absence of light represents a 0. By flickering these lasers billions of times per second, we can transmit entire high-definition movies across the ocean in the blink of an eye. It is the ultimate fusion of optical physics and digital communication engineering.
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#physics
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