“the one that Tom Scott visits here”
Tom Scott visits moire navigation beacon
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You might also find moiré-effect navigation beacons interesting, like the one that Tom Scott visits here: this video
The moiré effect lights that guide ships home
3.1M views · Mar 5, 2018 · 3:54 · 1 HN recommender · 3 mentions · discussed 2024–2026
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.
Why Hacker News points people here: Linked as the accessible explanation of how moire navigation lights work.
“the one that Tom Scott visits here”HN comment, 2024
What Hacker News said 3
“This is nothing but blogspam of the embedded Tom Scott video”
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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.
“Tom Scott has made a video on those”
Tom Scott explains the guiding arrows
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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