Uploaded August 2026 | Updated September 2026, 2 weeks ago

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A single light source sends energy in every direction so only a tiny amount reaches any one observer. As a ship moves farther away the light quickly becomes too weak to see.

A parabolic reflector bounces light into one direction. Rotating it creates the familiar lighthouse flash that ships can see from around the horizon.

#LighthouseTechnology #ParabolicReflector #NavigationLights #MaritimeEngineering #CasualNavigation