What is the area of water that can be covered by the light from the lighthouse
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The light beam emitted by such an ingenious system is visible over 20 miles (32 kilometers) away!
Following the advent of more automatic technologies, the presence of lighthouse keepers and other resources became less desirable, as automatic lamp changers emerged, eliminating the need for such traditional measures. Fortunately, the great design presented by Fresnel is still applied in lighthouses around the world and guides innumerable people at sea to this day.
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Following the advent of more automatic technologies, the presence of lighthouse keepers and other resources became less desirable, as automatic lamp changers emerged, eliminating the need for such traditional measures. Fortunately, the great design presented by Fresnel is still applied in lighthouses around the world and guides innumerable people at sea to this day.
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