Lighthouses have guided sailors safely through treacherous waters for centuries. But how exactly do they work? This video takes you inside the fascinating world of lighthouses, explaining the ...
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How lighthouses really work, the Fresnel lens, focused light beams, and the simple trick that saves ships by day
Lighthouses are far more than tall towers with bright bulbs, they are precision optical systems designed to push light across the horizon. This breaks down how Fresnel lenses concentrate beams, why ...
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