The Fresnel Lens: the Invention That Saved 1000 Ships
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The Invention That Saved a Million Ships | Fresnel Lens Lighthouse Tour
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Holographic Optics Break My Brain
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Why It Was Almost Impossible to Make the Blue LED
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Iceland Spar: the Mineral That Changed Science
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Where Does Grounded Electricity Actually Go?
11:48
The Unexpected Genius of Bionic Propellers
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How One Line in the Oldest Math Text Hinted at Hidden Universes
24:29