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This video demonstrates Total Internal Reflection (TIR), the same principle that allows fiber optic cables to carry high-speed data across the globe.

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25,994 views • 2 months ago •via X (Twitter)

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The Chinese-Russian PGI Technology group is producing FPV drone fiber optic spools up to 50km in length, for both internal and external unwinding of the optical fiber. The fiber apparently is wound using a special type of glue to hold the spool together.
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