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fres'nel' lan'tern


Meanings
  • noun

    A type of marine lantern used to emit light intermittently in a characteristic flash pattern to aid navigation at sea.

    - "The lighthouse uses a Fresnel lantern to signal ships at sea."
    - "The old Fresnel lantern in the museum still works."

Variants
List of all variants of fres'nel' lan'tern that leads to same result
Fresnel lens , Fresnel lenses
Etymology
origin and the way in which meanings have changed throughout history.

Named after Augustin-Jean Fresnel (1788-1827), a French physicist who invented the Fresnel lens, which is used in these lanterns to produce the flashing light.


Trivia
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  1. The first Fresnel lantern was installed in 1823 at Cordouan, France, and is still in operation today.

  2. Fresnel lanterns use a combination of fixed and revolving lenses to produce the characteristic flash pattern.

  3. The intermittent flashes of a Fresnel lantern can be seen up to 24 miles at sea.


Related Concepts
informations on related concepts or terms closely associated with the word. Discuss semantic fields or domains that the word belongs to
  1. Fresnel lens: A type of lens used in Fresnel lanterns to produce the intermittent flashes of light.

  2. Lighthouse: A tower, building, or other type of structure designed to emit light from a beacon or a lighted lamp, typically one standing on a headland to mark the position and to warn mariners of dangerous coastlines, shoals, reefs and obstructions at sea.


Culture
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Fresnel lanterns have played a significant role in maritime history, helping to prevent shipwrecks and save countless lives. They are often featured in literature and art as symbols of safety and navigation.

How to Memorize "fres'nel' lan'tern"

  1. visualize

    - Imagine a tall, conical lighthouse with a glass lantern on top. Inside the lantern, visualize a spinning lens that focuses and refocuses the light, creating the characteristic flash pattern.

  2. associate

    - Associate the Fresnel lantern with safety and navigation. Remember that it is used to help ships stay on course and avoid dangerous coastlines and obstacles.

  3. mnemonics

    - Create a mnemonic by remembering the acronym FLASH: Fresnel Lantern Aids Safe Harbors.


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