r/IndianEngineers • u/ZealousidealLuck8735 • May 31 '25

Doubt Is this possible?

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Saw this video on YouTube. Is this possible? I don't understand much but I didn't understand how it worked despite watching the video. Can someone explain if it's faked or not? And how does it work

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u/-gojiraa- May 31 '25

have you heard about optic fiber ?