The moiré effect lights that guide ships home

Name: The moiré effect lights that guide ships home
Uploaded: 2018-03-05T16:00:05Z
Duration: 3 min 54 s
Channel: Tom Scott
Description: Tom Scott investigates moire-effect beacons, called Inogon leading marks, a Swedish invention from the 1980s that shows different patterns depending on the viewer's position. He visits one used to mark an undersea cable and tracks down its history.

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3.1M views · 8 years ago · explainer · evergreen

Tom Scott investigates moire-effect beacons, called Inogon leading marks, a Swedish invention from the 1980s that shows different patterns depending on the viewer's position. He visits one used to mark an undersea cable and tracks down its history.

Linked as the accessible explanation of how moire navigation lights work.

Ships, submarines & maritime Everyday physics & science demos #moireeffect #inogon #navigationlights #maritime #tomscott

3 comments from Hacker News

@notpushkin2026 · in “Guiding Ships with Moire Patterns”

It is used and I guess it works largely the same way as in author’s first picture: you get arrows pointing towards where you should correct your course to. Tom Scott has made a video on those: ▶ this video

CitesView on HN

@dublinben2024 · in “Using the moiré effect to show different arrows to each observer (2018)”

This is nothing but blogspam of the embedded Tom Scott video: ▶ this video . This article adds nothing that is not already included in the video itself.

The moiré effect lights that guide ships home

3 comments from Hacker News

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The moiré effect lights that guide ships home

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